Find the reference angle for the given angle.-7.5°
A. 7.5°
B. 8°
C. 82.5°
D. 83°
Answer: A
Mathematics
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Find the limit L for the given function f, the point x0, and the positive number ?. Then find a number ? > 0 such that, for all x, 
f(x) = -5x + 9, x0 = -5, ? = 0.1
A. L = 34; ? = 0.03 B. L = 34; ? = 0.02 C. L = 16; ? = 0.02 D. L = -16; ? = 0.03
Mathematics
Use logarithmic differentiation to find the derivative of y.y = 
A. 
(lnx - ln(x + 4))
B. 
C. 2
D. 
Mathematics
Solve the problem.The March 1 unpaid balance in an account was $190. On March 7, a payment of $75 was made. The finance charge rate was 1.7% per month of the average daily balance. Find the new balance at the end of March.
A. $137.02 B. $116.70 C. $117.14 D. $117.20
Mathematics
Choose the most reasonable unit of measure.Hammer length: 38 
(mm, cm, m, km)
A. cm B. km C. m D. mm
Mathematics