Hi, if you could please explain step by step, assume I suck at all math, lol. Thank you!

https://learn.unm.edu/bbcswebdav/pid-7493658-dt-content-rid-66834390_1 Mo. 42 A car moving along a straight road har it's velocity ( in filsee ) at any timet ( in seconds ) given by v ( E ) = 3 6 1 16 - t2 [ost = 4] Find the distance travelled by the car in the 4 rec from to to t= 4 10. 43 Cell phone ad spending between 2005 ( t = 1 ) and 20 11 ( t = 7 ) is given by s (t ) = 0. 86 70.96 ( Ists 7 ) where SHE) is measured in billions of dollars and t is measured in years . what was the average spending per year on cell phoneads between 2005 and 2011 2