Book
Maths Puzzle
Algebra
The height, h, in metres, of an infield ball t seconds after being hit is given by the formula: h=20t-5t^2. How long is the ball in the air?
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Book Other Question
find the surface area of a cylinder whose height is 15 meters and whose base has a radius of 6 meters.
x= 1, 4, 5, 6, 8
y= _, 18, 23, 28, 38
I have to solve for y. I do not the equation to solve this problem. My book calls this problem graphing functions.