Find the average value of the function f over the given region.f(x, y) = 5x + 9y; R = {(x, y): 0 ? x ? 8, 0 ? y ? 7}
A. 
B. 20
C. 
D. 
Answer: C
Mathematics
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Determine whether the proportion is true or false.
= 
A. True B. False
Mathematics
Use front-end rounding to round each number. Then, add or subtract the rounded numbers to get an estimated answer. Finally, find the exact answer.What is 5.039 grams from 533.3 grams?
A. Estimate: 495 grams; exact: 528.271 grams B. Estimate: 495 grams; exact: 528.361 grams C. Estimate: 495 grams; exact: 528.261 grams D. Estimate: 595 grams; exact: 538.261 grams
Mathematics
Round the decimal to the given place value.13.4879 to the nearest hundredth
A. 13.487 B. 13.49 C. 13.50 D. 13.488
Mathematics
Solve the equation.3(3x - 1) = 243
A. {2} B. {4} C. {1} D. {3}
Mathematics