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

Answer:

$(150+21m)\ miles$

Step-by-step 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

$s=\frac{d}{t}$

$d=st$

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

$(150+21m)\ miles$