?Which of the following is not true about perpendicular lines?
?
A. ?The product of their slopes is equal to -1.
B. ?Ifm1 andm2 are slopes of two different lines, and the lines are perpendicular to each other, then m2 is the reciprocal of m1.
C. ?Slopes of perpendicular lines are reciprocals of each other.
D. ?Perpendicular lines intersect at right angles.
E. ?Perpendicular lines break a region into four equal parts.
Answer: C
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Graph the function.f(x) = 
A. 
B. 
C. 
D. 
Solve the problem.Two friends decide to meet in Chicago to attend a Cub's baseball game. Rob travels 
in the same time that Carl travels 
Rob's trip uses more interstate highways and he can average 
more than Carl. What is Rob's average speed?
A. 61 mph B. 58 mph C. 57 mph D. 65 mph
Evaluate.(-7)4
A. -28 B. -2401 C. 2401 D. 28
Solve the inequality, and graph the solution set.s2 - 3s - 10 < 0
A. (5, ?)
B. (-?, -2) ? (5, ?)
C. (-2, 5)
D. (-?, -2)