Multiply.
A. 36 - 
z2
B. 36 - 
z - 
z2
C. 36 + 
z - 
z2
D. 36 - 
z2
Answer: A
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Simplify by writing with positive exponents. Evaluate if necessary. Assume that all variables represent nonzero real numbers.
A. 6t-4
B. 
C. 
D. 6t2
Solve the problem.The population in a particular country is growing at the rate of 2.6% per year. If 2,546,000 people lived there in 1999, how many will there be in the year 2006? Round to the nearest ten-thousand.
A. 3,050,000 people B. 3,670,000 people C. 3,360,000 people D. 2,990,000 people
Solve the problem.Police use the formula s = 
to estimate the speed s of a car in miles per hour, where d is the distance in feet that the car skidded and f is the coefficient of friction. If the coefficient of friction on a certain gravel road is 0.28 and a car skidded 330 feet, find the speed of the car, to the nearest mile per hour.
A. 2772 mph B. 99 mph C. 53 mph D. 288 mph
Rewrite using the stated property.Associative property; 2 ? (
? 8)
A. (2 ? 
) ? 8
B. (2 ? 8) ? 
C. (8 ? 
) ? 2
D. 2 ? (8 ? 
)