A kicker starts a football game by "kicking off". The quadratic function y = -6x2 + 12x models the football's height after x seconds. How long, in seconds, is the football in
the air?

The price of an item has been reduced by 30%. the original price was $30. what is the price of the item now ?

What is the effect on the graph of the function f(x)=x when f(x) is replaced with -f(x)+4

Someone answer asap for ! the following statements are true about the coins calvin and sasha have collected. * calvin and sasha has the same amount of money. * calvin has only quarters. * sasha has dimes, nickels, and pennies * calvin has the same number of quarters as sasha has dimes. * sasha has $1.95 in coins that are not dimes. exactly how many quarters does calvin have?