I really need help with these 2 questions!! A firecracker shoots up from a hill 160 feet high with an initial speed of 90 feet per second. Using the formula H(t) = -16t^2 + vt + s, approximately how long will it take the firecracker to hit the ground?
An equation is shown below: km^2 + cp = 2 Which equation is solved for m?

Question

I really need help with these 2 questions!! A firecracker shoots up from a hill 160 feet high with an initial speed of 90 feet per second. Using the formula H(t) = -16t^2 + vt + s, approximately how long will it take the firecracker to hit the ground? 
An equation is shown below: km^2 + cp = 2 Which equation is solved for m?

madhu.mukherjee.946 · Answer

for the second question make m the subject of your formula

madhu.mukherjee.946 · Answer

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