Question
20. Now, describe the meaning of what you just did. Remember that x stands for number of times bathing in a week and y stands for the money spent on appearance in general in a month. (Hint: You should have the word " predict" in your answer somewhere _
20. Now, describe the meaning of what you just did. Remember that x stands for number of times bathing in a week and y stands for the money spent on appearance in general in a month. (Hint: You should have the word " predict" in your answer somewhere _
Answers
Use the table. It shows the results of a survey in which 100 students were asked how they spent money last week. $$\begin{array}{|l|c|}\hline \quad \quad\quad\quad \text { Item } & \begin{array}{c}\text { Number } \\\text { of students }\end{array} \\\hline \text { Food } & 78 \\\hline \text { Clothes, accessories } & 20 \\\hline \text { Books, magazines, comics } & 15 \\\hline \text { Toys, stickers, games } & 14 \\ \hline \text { Movie tickets } & 14 \\\hline \text { Arcade games } & 14 \\\hline \text { Gifts } & 13 \\\hline \text { Movie rentals } & 13 \\\hline \text { Music } & 12 \\\hline \text { Footwear } & 11 \\\hline \text { Grooming products } & 11 \\\hline\end{array}$$ Choose one item from Exercise $45 .$ Ask 20 students whether they bought that item. Compare the results with your prediction. Are the results what you expected? Explain.
So here we are asked to estimate 20% of a number, So 20% can also be written as 1/5. Now, the number that we're looking at is gonna be 61. So 61 since we're just estimating we don't need an exact answer. So we're gonna use the round number 60 toe estimate this answer. Now I have to find 1/5 of 60. We're just gonna look at 60 divided by five, and that will give us 12. So here is our estimation for 20% of 61.
Hello. And the question is, given that a company's parents x dollars per week on online advertising and by dollar per week on TV advertising it's a weekly. Sales were found to be given by the function of the glaciers, the function of X and Y. It is a cause to and and to work to department four into what? To the bar pointed. Okay, so we have to find SX at 5000. Okay. And that's why Act 2000 and 2000. Okay, so first we have two parcel. We have to do partial differences in our bags with respect to X. So does it cost to S X at X comma y? So it will be a request to And here we will treat by as a constant to turn off by pointed in 2.4 X to the power of minus 0.6. So it will be cause to four and two. Yeah. Why do the part pointed? Extra departments of 0.6? No, we will do partial the transition of X. With respect to vice, it will be close to S y at X comma y, so it will be cost too then do expand four 0.8 and two y to the power point. Two months of 20.2. So it will be cost too. Uh, extra. Depart 0.4. Where to? Departments of 0.2. No, we will find the given indicated function at the given point. So s XR 3000 in 2000 Will be cost too. Four into X 2000 power of management. Six into 2000. Power appointed. Okay, so? So why 3000 and 2000? So it is because 28 Exit 3000 power of 0.4 into 2000. Power up minus 20000.2. Now we will calculate it. No. So it will request to 14.3 14. 43.0 to 6. Okay. So we can see that SX at gunpoint. 3000. 2000. It is a cost to 14.34 to, so we can see that vehicle sales increase 14 point $342. 342 dollar when we increase homeland advertising. Okay. And how will level off 3000 in 2000? Yes, and we can see that as why are 3000 in 2000, it will be close to 43.0 to 6. It means he has increased 43.0 to $6. But we Then we increase television advertising. Advertising. I didn't 3000 and 2000. Okay, This is the answer. I hope your initial. Thank you.
So 74 wants us to define the variable X so X would be the number of successes. So in this particular problem, it would be the number of voters who think economy is the most important issue.
Okay. We need to create an expression to show the amount of money that Catalina I believe a certain name is earning from selling these candy bars for dollar 50 each. And so all you have to do is multiply Wendell and 50 cents times of sales each day, which the first day was 10. Second day was 15. Third bay was 12 and I guess I'm just gonna kind of put them all here. 12 8 19 And I believe awesome was 20. 0 22 31 And there's our expression. This dollar 50 would be mortified by her sales. Every single day, I'll put a couple spaces so that it looks exactly the same across there is our expression.