Question

Evaluate 80 × a-2 for a = 4.

Answer 1

\[80\times a-2\]?

Answer 2

Evaluate 80 × a^-2 for a = 4.

Answer 3

Hi Fibonacchi : )

Answer 4

is that an exponent or is it how I typed it?

Answer 5

80 x a^-2 for a = 4

Answer 6

ah ok, and hi Somy, so first, can you substitute 4 in for any a's you see?

Answer 7

Substitute 4 for a.

80 * 4^-2

Answer 8

5