Use properties of logarithms to expand the logarithmic expression as much as possible. Where possible, evaluate logarithmic expressions without using a calculator.log7 
A. 
log7 x + 
log7 y - 
B. 
log7 x - 
log7 y + 
C. 
(log7 x4 + log7 y - 2)
D. 
(log7 x4y - log7 49)
Answer: A
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One solution of a polynomial equation is given. Use synthetic division to find any remaining solutions.x4 + 15x3 + 49x2 - 15x - 50 = 0; 1
A. -10, -5, -1 B. -1, 5, 10 C. -5, -1, 10 D. -10, -5, 1
Solve the problem.The graphing calculator screens show the graph of one of the equations below. Which equation is it?
A. -2x + 3y = -6 B. 3x - 2y = -6 C. 2x - 3y = 6 D. -2x + 3y = 6
Solve by the substitution method.8x + 7y = -7 -6x - 4y = 4
A. (-1, 0) B. (0, 0) C. (0, -1) D. (-7, 4)
Kent drives his Mazda 192 miles in the same time that Dave drives his Nissan 180 miles. If Kent averages 3 miles per hour faster than Dave, find their rates.
A. 42 mph for Dave and 45 mph for Kent B. 40 mph for Dave and 43 mph for Kent C. 55 mph for Dave and 58 mph for Kent D. 45 mph for Dave and 48 mph for Kent E. 48 mph for Dave and 42 mph for Kent