Find the linear function that is the best fit for the given data. Round decimal values to the nearest hundredth, if necessary.
A. y = 1.05x + 11.8
B. y = 0.95x + 11.8
C. y = 0.95x - 11.8
D. y = 1.05x - 11.8
Answer: D
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Find the center of mass of a thin plate of constant density covering the given region.The region enclosed by the parabolas y = - x2 + 32 and y = x2
A. 
= 0, 
= 16
B. 
= 0, 
= 
C. 
= 16, 
= 0
D. 
= 0, 
= 32
Solve the problem. First use front end rounding. Then find the exact answer.The table shows the approximate price for several items that Tracy would like to purchase as gifts for her friends. How much will she need to spend in order to purchase a jacket, a coffee mug, a tee shirt, and basket of assorted nuts and candy?
A. Estimate: $110; exact: $99 B. Estimate: $110; exact: $113 C. Estimate: $100; exact: $113 D. Estimate: $110; exact: $115
Find the volume of a pyramid 18 ft high with a 10-ft-by-10-ft square base.
What will be an ideal response?
Solve.z = 49 ? 25
A. 74 B. 122,500 C. 12,250 D. 1225