Afirework is launched from the ground at a velocity of 180 feet per second. its height after t (t is variable) seconds is given by the polynomial -16t^2+180t. what is the height of the firework after 2 seconds? very urgent,

Asmall business produces and sells balls. the fixed costs are $20 and each ball costs $4.32 to produce. each ball sells for $8.32. write the equations for the total cost, c, and the revenue, r, then use the graphing method to determine how many balls must be sold to break even.