Write the expression in the standard form a + bi.(7 + 7i) - (-4 + i)
A. -11 - 6i
B. 11 - 6i
C. 3 + 8i
D. 11 + 6i
Answer: D
Mathematics
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Solve the problem.A loan worth $4500 collects simple interest each year for 12 years. At the end of that time, a total of $7605 is paid back. Determine the APR for this loan.
A. 5.5% B. 4.5% C. 5.75% D. 5% E. 4.25%
Mathematics
Solve the problem.Suppose that f(x) = 2x + 1. If f(x) = 1/33, what is x?
A. -5 B. 1 C. -1 D. 5
Mathematics
Determine whether the matrices in each pair are inverses of each other.
, 
A. Yes B. No
Mathematics
Write the expression in the form bi, where b is a real number.
A. -5
B. 5i
C. 5
D. -5i
Mathematics