## Question

###### Solve each problem. See Example $10 .$The graph shows the daily megawatts of electricity used on a record-breaking summer day in Sacramento, California.(a) Is this the graph of a function?(b) What is the domain?(c) Estimate the number of megawatts used at 8 A. M.(d) At what time was the most electricity used? the least electricity?(e) Call this function $f$. What is $f(12) ?$ Interpret your answer.(f) During what time intervals is usage increasing? decreasing?(GRAPH CAN'T COPY).

Solve each problem. See Example $10 .$ The graph shows the daily megawatts of electricity used on a record-breaking summer day in Sacramento, California. (a) Is this the graph of a function? (b) What is the domain? (c) Estimate the number of megawatts used at 8 A. M. (d) At what time was the most electricity used? the least electricity? (e) Call this function $f$. What is $f(12) ?$ Interpret your answer. (f) During what time intervals is usage increasing? decreasing? (GRAPH CAN'T COPY).

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