Simplify the expression. Assume that all variables are positive when they appear.(
+ 2)(
- 2)
A. 12 - 2
B. 8
C. 10
D. 16
Answer: B
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Solve the problem.In a computer simulation, a satellite orbits around Earth at a distance from the Earth's surface of 
miles. The orbit is circular, and one revolution around Earth takes 10.7 days. Assuming the radius of the Earth is 3960 miles, find the linear speed of the satellite. Express the answer in miles per hour to the nearest whole mile.
A. 16,812 mph B. 685 mph C. 782 mph D. 124 mph
Write the ratio in simplest form.90:54 years
A. 
B. 
C. 
D. 
Use the Change-of-Base Formula and a calculator to evaluate the logarithm. Round your answer to three decimal places.log90.187
A. -0.763 B. -1.310 C. 48.128 D. -0.728
Provide an appropriate response.The only consecutive whole numbers that are both prime numbers are 
and 
.
A. 2 and 3 B. 1 and 2 C. 0 and 1 D. 6 and 7