Which term describes a fraction that has a variable or variable expression in its numerator, its denominator, or both? . a. variable fraction. b. rational expression. c. rational fraction. d. variable expression

the term described a fraction that has a variable or variable expression in its numerator is called the rational number

Explanation:

Rational number is basically the quotient of two integers and the denominator is not zero (remember that you can never divide by zero; if you do the answer always will be infinity)  

For example:

1 divided by 3 = 1/3 is a rational number

-5 divided by 8 = -5/8 is also a rational number  

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.