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# OSAThe total revenue (in hundreds of dollars) from the sale of spas and solar heaters approximated by R(x,y) -1Sx2 21xY 507x 21y2 546y Find the critical points and ...

## Question

###### OSAThe total revenue (in hundreds of dollars) from the sale of spas and solar heaters approximated by R(x,y) -1Sx2 21xY 507x 21y2 546y Find the critical points and use the second derivative test to find the number of spas ad solar heaters that should be produced and sold to maximize revenue: Find the maximum revenue.Select one: The critical points are: (x,y)-(11,8) At the critical point D-819 (positive) and R {X}=-30 (negative) and therefore the revenue maximum when *=11 and v-8, The maximum rev

OSA The total revenue (in hundreds of dollars) from the sale of spas and solar heaters approximated by R(x,y) -1Sx2 21xY 507x 21y2 546y Find the critical points and use the second derivative test to find the number of spas ad solar heaters that should be produced and sold to maximize revenue: Find the maximum revenue. Select one: The critical points are: (x,y)-(11,8) At the critical point D-819 (positive) and R {X}=-30 (negative) and therefore the revenue maximum when *=11 and v-8, The maximum revenue Is R(11,8)-4983 dollars The critical points are: (x,y)-(7,12) At the critical point D-819 (positive) and R_{xx} =-30 (negative) and therefore the revenue is maximum when x-7 and Y=12. The maximum revenue Is R(7,12)-4623 dollars The critical points are: (x,Y)-(10,8) At the critical point D=819 (positive) and {xx}=-30 (negative) and therefore the revenue Is maximum when x=10 and y-8. The maximum revenue is R(10,8)=4959 dollars d. The critical points are: (x,y)-(12,7) At the critical polnt D-819 (positive) and R_{xx} =-30 (negatlve) and therefore the revenue is maximum when *=12 and Y-7. The maximum revenue is R(12,7)-4998 dollars

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