Evaluate the expression according to the order of operations.10 ? 8 - 6 ? 6
A. 120
B. 44
C. 444
D. 2880
Answer: B
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Solve the problem.The surface area of a hollow cylinder (tube) is given by 
where h is the length of the cylinder and R1 and R2 are the outer and inner radii. If h, R1, and R2 are measured to be 9 inches, 5 inches, and 6 inches respectively, and if these measurements are accurate to within 0.1 inches, estimate the maximum percentage error in computing S.
A. 0.031% B. 0.051% C. 0.028% D. 0.040%
Use Euler's method to calculate the first three approximations to the given initial value problem for the specified increment size. Round your results to four decimal places.y' = 1 + 
, y(4) = -1, dx = 0.5
A. y1 = -1.2500, y2 = -0.3889, y3 = 1.1444 B. y1 = -1.2500, y2 = -0.2917, y3 = 0.5722 C. y1 = -0.9375, y2 = -0.2333, y3 = 0.3433 D. y1 = -0.6250, y2 = -0.1944, y3 = 0.2861
Solve.The amount of time it takes a swimmer to swim a race is inversely proportional to the average speed of the swimmer. A swimmer finishes a race in 150 seconds with an average speed of 4 feet per second. Find the average speed of the swimmer if it takes 200 seconds to finish the race.
A. 2 feet per second B. 3 feet per second C. 4 feet per second D. 5 feet per second
Solve.?x? = 4
A. 4 B. -4 C. 16 D. -4, 4