Answer and work down below
Negative exponents work like this:
So, in order to evaluate a negative exponent, you simply have to invert the base, and then raise to the positive equivalent of the exponent.
As an example, here are the first three exercises:
You can work out the rest applying this logic.
Just by estimating, 54% is a little over 1/2 of 168. You know by that, that neither A or B is close. The real answer is 90.72, so if your instructor wants you to round up, it would be D
<span>C.
glacial melting<<<<<<<<<<<<<<<</span>
A. one solution
B 4(2x-5) = 4
2x-5 = 1
2x = 6
x=3