Answer:
$7.20
Step-by-step explanation:
Answer:
150 miles
Step-by-step explanation:
In this problem, we are only interested in the distance that Lauren drove, this means that her average speed (75 mph to the cost, and 25 mph on the way back) does not matter since the distance remains the same. If one leg of trip is 75 miles long, the total mileage for the round trip is:

Lauren drove 150 miles.
She must get 46 questions correct to get a 92% on the test
X - the number of five dollar bills
y - the number of one dollar bills
She has 18 bills in total.

She has $62.

Set both expressions equal to each other:

She has 11 five dollar bills and 7 one dollar bills.
Add y to both sides
60=48y+y
undistribute y
60=y(48+1)
60=y(49)
divide both sides by 49
60/49=y