Question

Evaluate the following expression using the values given:
Find 2r2 + 3s3 - r2 + 4t2 - r2 if r = -2, s = -3, and t = 5

A.) -19
B.) -37
C.) 27
D.) 19

Answer 1

2(-2) + 3(-3)3 - (-2)2 + 4(5)2 - (-2)2 Alls I did was substitute the letters for the numbers. It should be pretty easy now.

Answer 2

i got 17

Answer 3

Oh wait are those numbers that are after the letters supposed to be exponents?

Answer 4

2r2 + 3s3 - r2 + 4t2 - r2 for example is 2r2 2r^2 ?