The graph below shows the percentage of students enrolled in the College of Engineering at State University. Use the graph to answer the question.
If f(x) = 20%, what year is represented by x?
A. 1985
B. 1975
C. 1990
D. 1980
Answer: A
Mathematics
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Solve the problem.Find the tangent line(s) at the pole for the curve 
A. ? = 
(y = -x)
B. ? = 
(y = x)
C. ? = 
(x = 0)
D. ? = 0 (y = 0)
Mathematics
Assume that x, y, and a are positive numbers. Use the properties of logarithms to write the expression 
in terms of the logarithms of x and y.
What will be an ideal response?
Mathematics
Change the logarithmic expression to an equivalent expression involving an exponent.log2
= -3
A. 
3 = 2
B. 28 = 3
C. 2-3 = 
D. 32 = 
Mathematics
Rewrite the expression 
using only positive exponents. Assume that z is not zero.
A. 
B. 
C. 
D. 
E. 
Mathematics