The height and weight of several adults were recorded:
Height (ft)
4.65
5.15
5.6
5.85
6.2
6.35
Weight (lbs)
95.9
118
141
151
167
186
It was discovered that this can be modeled by the equation
y = 50.2x−140
where x is height in feet and y is weight in pounds.
What height corresponds to a weight of 130 pounds? Round to the nearest hundredth.
A 6.25 ft B 5.85 ft C 6.68ft D 5.38 FT

D ) 5.38 ft

Step-by-step explanation:

Plug y as the weight

130 = 50.2x -140

add 140 to both sides

270 = 50.2x

divide by 50.2

x = 5.37848606

5.37848606 rounds to 5.38

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:

b