Question

how to solve use the formula h=40t - 5t^ to find the height in metes of a ball 5 second after it is thrown ??

Answer 1

Use substuition.

h=40*5-5*5^

h = 200-125

h = 75

That's the answer

Answer 2

replace t by 5 to get
\[40\times 5-5\times 5^2\]

\[=200-5\times 25\]
\[=200-125\]
=\[75\]

Answer 3

okay thank you very much :)