Find the exact value of the expression in degrees without using a calculator or table.arccos (-1)
A. 270°
B. 45°
C. 180°
D. 90°
Answer: C
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Solve the problem.If a person puts 1 cent in a piggy bank on the first day, 2 cents on the second day, 3 cents on the third day, and so on, how much money will be in the bank after 30 days?
A. $9.30 B. $4.65 C. $0.30 D. $2.33
Solve the problem.Lori Bray drives a parcel delivery truck. Her usual route consists of 8 stops. How many ways can Lori travel to these stops and return to her warehouse?
A. 40,320 B. 56 C. 8 D. 5040
For the pair of functions, perform the indicated operation.f(x) = 7x2 - 8x, g(x) = x2 - 2x - 48
Find 
(x).
A. 
B. 
C. 
D. 
Solve the problem.If A is a 3 × 3 matrix and A + B = is the 
zero matrix, what can you say about the matrix?
A. B is the 3 × 3 zero matrix B. B is the 3 × 3 identity matrix C. B = A D. B = -A