SAT Math Multiple Choice Practice Question 41: Answer and Explanation
19. If p and q are positive integers, then is equivalent to
B. 5pq + p
D. 5pq - p
E. 5q + 1
Correct Answer: C
C. This problem involves exponent laws: When you take a power of a power, such as , you multiply the powers. So this expression equals 5p(q + 1) = 5pq + p. Also, when you multiply exponents, you add the powers, so .