Question

Check my answers for these word problems?
1. A car rents for $18.75 per day, plus $.25 per mile. If you rent the car for one week, what is the greatest number of miles you can drive and still keep the cost of renting the car under $200 for the week?
my answer: 274 miles
2. The sum of twice a number and –6 is nine more that the opposite of the number. Find the number.
my answer: 15
Thanks for checking! :)

Answer 1

for 2nd question i think it shoulbe 2x-6=9-2x

Answer 2

okay thanks! I knew the second one was wrong, but was the first one right?

Answer 3

for the second one is the number 3.75?

Answer 4

sorry 137.5 for 1st one

Answer 5

for the first one i multiplied 18.75 times 7 b/c they rent for one week= 7 days
equals $131.25
then if it is .25 for each mile, times 274 = $68.5
add 68.5 + 131.25 = 199.75
under $200
.....so how is my first answer wrong?

Answer 6

oh sorry i took 0.5 instead of 0.25 yes u are correct :)

Answer 7

thank you for all your help! (:

Answer 8

pleasure!