If an object is dropped from the height of 54 feet the function h=-16t2 +54 gives the height of the object after t seconds approximately how long will it take before the object hits the ground

t= +/-

Step-by-step explanation:

set h=0, 0=-16+54, add the -16 to the other side, 16=54, divide the 16 off, =, square root both sides, t= +/- , t= +/- /4, t= +/- , the object will hit the ground when t= +/-

mr. flanders’ class sold 47 doughnuts and   mr. rodriquez’s class sold 38 cartons of milk

step-by-step explanation:

let x be the number of doughnuts sold by mr. flanders’ class and y be the number of cartons sold by mr. rodriquez’s class.

1. together, the classes sold 85 items, then

x+y=85.

2. both classes earn earned $104.49 for their school. if doughnuts were sold for $1.35 each, then x doughnuts costed $1.35x. if cartons of milk were sold for $1.08 each, then y cartons costed $1.08y. hence,

1.35x+1.08y=104.49.

3. solve the system of two equations: