Factor the expression.(x - 4)-3/2 - (x - 4)-1/2 + (x - 4)1/2
A. (x - 4)-3/2(x2 - 9x + 21)
B. (x - 4)-3/2(x2 + 9x - 21)
C. (x - 4)3/2(x2 + 8x - 21)
D. (x - 4)-3/2(x2 - 9x - 17)
Answer: A
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= 
.In 1994 the Consumer Price Index was 148.2 and in 2000 it was 172.2. Find the amount that would be charged in 2000 for the use of the same amount of electricity that cost $180 in 1994. Give your answer to the nearest dollar.
A. $204 B. $155 C. $209 D. $200
Use the square root property to solve the quadratic equation.x2 = 
A. ± 7
B. ± 
C. ± 
D. 
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A. 12x3y2(10x5y7 + 10y5 + 7x3) B. 12x3(10x5y9 + 10y7 + 7x3y2) C. No common factor (except 1) D. 12(10x8y9 + 10x3y7 + 7x6y2)
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, where g is the acceleration due to gravity and h is the height the object has fallen. If the acceleration g due to gravity on Earth is approximately 32 feet per second per second, find the velocity of a bowling ball after it has fallen 40 feet. (Round to the nearest tenth.)
A. 2560 ft per sec B. 8.9 ft per sec C. 35.8 ft per sec D. 50.6 ft per sec