Question

If p= -7 and r = 1/2, what does pr - r equal

A) -4
B) -3
C) 3
D) 4

Answer 1

Explanation:

Factor the expression.

pr - r = r(p-1) = ½(-8) = -4

Answer 2

-4

Explanation:

1. pr = -7 × 1/2
2. -7 × 1/2 = -3.5
3. -3.5 - r = -3.5 - 1/2
4. -3.5 - 1/2 = -3.5 - 0.5
5. -3.5 - 0.5 = -4

I hope this helps!