F(t)=10t2+5t+1 . find the value of t for which the tangent line to the graph of f(t) has slope 1.

Do u just plot the numbers on the graph like (1,

10 ! in a race, nick is 50 feet in front of jay after ten seconds. how fast can nick run, if jay can run 20 feet per second?

Bob is putting books on a shelf and takes a break after filling 18 1/2 inches on the book shelf. the book shelf is now 2/3 full. how long is the entire bookshelf?