Yesterday, grace drove 31 1/2 miles. she used 1 1/4 gallons of gasoline. What is the unit rate for miles per​ gallon?

you never say the total so we cant find the percentage used for petrol

step-by-step explanation:

168

step-by-step explanation:

i am pretty sure that the answer is 168

a

step-by-step explanation:

when a number is between two straight lines it means the absolute value.

to find absolute value you need to know how many numbers is that number away from 0.

when finding absolute value the number will always come out positive

so absolute value of -3 is 3

absolute value of 3/2 is 3/2

absolute value of -2 is 2

absolute value of 3.5 is 3.5

absolute value of -1 is 1

now put these numbers in order:

a)   |-1|, |3/2|, |-2|, |-3|, |3.5|