Question

Please help me I need help quick

!!!!
Jim’s new car has 150 miles on the odometer. He takes a trip and drives an average of m miles each day for three weeks. Which expression represents the mileage on Jim’s car after his trip?

Answer 1

`(150+21m)\ miles`

Explanation:

we know that

`1\ week=7\ days`

Remember that the speed is equal to divide the distance by the time

Let

s ---> the speed in miles per day

d ---> the distance in miles

t ---> the time in days

`s=(d)/(t)`

`d=st`

we have

`s=m\ miles/day`

`t=3\ weeks`

Convert to days

`t=3(7)=21\ days`

Find the distance covered in the trip

`d=st` ---->
`d=m(21)=21m\ miles`

To find out the mileage on Jim’s car after his trip, sum the mileage before his trip (150 miles) plus the mileage of the trip

`(150+21m)\ miles`