The quadratic function h(t)=-16t^2 +90 represents the height in feet of an object t seconds after it begins falling from a height of 90 feet. what is the height of the object after 2 seconds?

45

step-by-step explanation:

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.

x-150=475   x=625

step-by-step explanation:

if the bike after the sale ($150) is $475 then just simply add 150 to 475.