Simplify.(4x-5)(8x-8)
A. 32x40
B. -32x40
C. 
D. 32x13
Answer: C
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Substitute the given values into the formula and then evaluate to find the unknown quantity. Label units in your answer. If the answer is not exact, round your answer to the nearest hundredth.V = 
?r3; r = 2, ? = 3.14
A. 16.75 B. 100.47 C. 33.49 D. 10.67
Solve the problem.The velocity field F of a fluid is the spin field F = - 
i + 
j. Following the smooth curve y = f(x) from (a, f(a)) to (b, f(b)), show that the flux across the curve is 
ds = k[(a2 + (f(a))2)1/2 - (b2 + (f(b))2)1/2]
What will be an ideal response?
Solve the problem.The driver of a car traveling at 36 ft/sec suddenly applies the brakes. The position of the car is 
t seconds after the driver applies the brakes. How many seconds after the driver applies the brakes does the car come to a stop?
A. 12 sec B. 18 sec C. 6 sec D. 36 sec
Solve the problem.An insurance company says that at age 50 one must choose to take $10,000 at age 60, $30,000 at 70, or $50,000 at 80 ($0 death benefit). The probability of living from 50 to 60 is 0.87, from 50 to 70, 0.62, and from 50 to 80, 0.42. Find the expected value at each age.
A. 60: $6200 70: $18,600 80: $21,000 B. 60: $8700 70: $12,600 80: $21,000 C. 60: $8700 70: $26,100 80: $43,500 D. 60: $8700 70: $18,600 80: $21,000