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:[tex](150+21m)\ miles[/tex]Step-by-step explanation:we know that[tex]1\ week=7\ days[/tex]Remember that the speed is equal to divide the distance by the timeLets ---> the speed in miles per dayd ---> the distance in milest ---> the time in days[tex]s=\frac{d}{t}[/tex][tex]d=st[/tex]we have[tex]s=m\ miles/day[/tex][tex]t=3\ weeks[/tex]Convert to days[tex]t=3(7)=21\ days[/tex]Find the distance covered in the trip[tex]d=st[/tex] ----> [tex]d=m(21)=21m\ miles[/tex]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[tex](150+21m)\ miles[/tex]