An object, initially at rest, rolls down a hill. It has an acceleration of 3.5 m/s ^ 2 . If it rolls for 5.1m, how fast is it traveling ?

Any is very appreciated! (picture is provided below)not sure how to do this at all won't lie

Tim's phone service charges $26.39 plus an additional $0.21 for each text message sent per month. if tim's phone bill was $31.64, which equation could be used to find how many text messages, x, tim sent last month?

Harry owes the bank money. to repay his debt, he paid $150 back to the bank each month. after 10 months, his remaining debt was $6900. what was the original amount of harry's debt? how long did it take harry to pay back his entire debt?