Why Is 0.1875 rational

It's rational because it is a decimal! It would be irrational if it was a decimal that kept continuing or repeating.

Rational numbers can be expressed by a fraction with whole number numerator and denominator.

0.1875 = 1875/10000 = 3/16

Step-by-step explanation:

$9.89

step-by-step explanation:

9.90 = p x .06 x .25 (3/12 changed to a decimal)

9.90 = p x 0.015

9.90 - 0.015 = p

9.89 = p