Find the inverse matrix of A.A = 
A. 
B. 
C. 
D. 
Answer: C
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Use problem solving strategies to solve the problem.There is a number between 2 and 8, such that if you raise any of the remaining numbers to the power of this number, the units digit of the result will always be equal to the base. What is the number?
A. 7 B. 3 C. 5 D. 2
For the functions f(x) and g(x), evaluate the indicated function.Find (f + g)(-4) when f(x) = x - 7 and g(x) = x - 1.
A. -16 B. -14 C. 0 D. -2
Write the standard form of the equation of the circle.Center (0, 0), r = 2
A. x2 + y2 = 2 B. (x - 2)2 + (y - 2)2 = 4 C. (x - 2)2 + (y - 2)2 = 2 D. x2 + y2 = 4
Solve the problem.A contractor needs to know the height of a building to estimate the cost of a job. From a point 96 feet away from the base of the building, the angle of elevation to the top of the building is found to be 
Find the height of the building. Round your answer to the hundredths place.
A. 98.75 ft B. 103.18 ft C. 100.28 ft D. 104.51 ft