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**algebraIIgirl** This is a problem in my homework thats due tomorrow please hints?

The Stratosphere Tower in Las Vegas is 921 feet tall and has a "needle" at the top that extends even higher into the air. A thrill ride called the Big Shot catapults riders 160 feet up the needle and then lets them fall back to the launching pad.

a. The height *h* (in feet) of a rider on the Big Shot can be modeled by *h=-*16*t+v(t) + *921 where *v* is the initial velocity (in feet per second). Find *v* using the fact that the maximum value of *h* is 921+160+1081 feet.

PLEASE HELP IF YOU CAN! we have been solving these kinda of problems but not with two variables!