What is the answer to this I need help?

h(t)=-16+64t+80

This is the number of parts out of 100, the numerator of a fraction where the denominator is 100. submit

Marcus needs to rewrite f(x) = x2 + 6x + 4 in vertex form.

10 ! a train starts from grand city and travels toward belleville 388 miles away. at the same time, a train starts from belleville and runs at the rate of 47 miles per hour toward grand city. they pass each other 4 hours later. find the rate of the train from grand city.