Question

2. Evaluate the expression for a = –1 and b = 5. Show your work.
5a – 7b + b^2

Answer 1

Plug it in.
5(-1) - 7(5) + (5)2
Solve. What do you get?

Answer 2

5X(-1)-7X5+5X2=-30 ???

Answer 3

There is NO X's! All you have to do is replace the variables with the Numbers. Like I showed you above.
5(-1) - 7(5) + 5^2.
Sorry I misread it. But this is the correct way. Do you know how to solve?

Answer 4

please, substitute -1 in place of a, and 5 in place of b

Answer 5

-15

Answer 6

that's right!

Answer 7

Thank you

Answer 8

Thank you!

Answer 9

You got it!