Solve the problem.The radius of a ball is claimed to be 4.5 inches, with a possible error of 0.05 inch. Use differentials to approximate the maximum possible error in calculating the volume of the sphere and the surface area of the sphere.
A. 8.1? in.3; 3.6? in.2
B. 1.8? in.3; 4.05? in.2
C. 4.05? in.3; 1.8? in.2
D. 0.9? in.3; 18? in.2
Answer: C
Mathematics
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Perform the indicated operation.0.74 - (-0.21)
A. 1.05 B. 0.53 C. 0.1554 D. 0.95
Mathematics
Solve.In a town whose population is 3000, a disease creates an epidemic. The number N of people infected t days after the disease has begun is given by the function N(t) = 
. Find the number infected after 8 days.
A. 2545 B. 2549 C. 2550 D. 2547
Mathematics
Find fraction notation for the ratio. You need not simplify.In the rectangle shown below, what is the ratio of length to width? of width to length?
A. 
; 
B. 
; 
C. 
; 
D. 
; 
Mathematics
Multiply.(4x + 9)(4x + 9)
A. 16x2 + 72x + 81 B. 4x2 + 72x + 71 C. 16x2 + 81x + 72 D. 4x2 + 71x + 81
Mathematics