What is an expression containing variables, numbers, and operation symbols?

an example would be: 9x+5m/2=24

because the variables are x and m

the numbers are 9, 5, 2, and 24

and the operation symbols are +, /, and =

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.