question in the description

Question

1. An object is propelled off of a platform that is 75 feet high at a speed of 45 feet per second (ft./s). The height of the object off the ground is given by the formula , where  is the object's height at time (t) seconds after the object is propelled. The downward negative pull on the object is represented by . Solve for t.

2.The product of two negative consecutive numbers is 210. The equation to represent this is: . Solve for n

 

Answer 1

-16^2 + 45t + 75 = 0

t = 45/32 + or - (1/32)sqr(2025 +64(75)) when it hits the ground at h(t)=0

n(n+1) = 210

n^2 + n -210 = 0

(n+15)(n-14) =0

n=-15 n+1 = -14

-15 x -14 = 210