Question

A painter made the table below to show the amount of paint it takes to cover a certain amount of square feet. The amount of paint varies directly with the area of each wall.

Amount of Paint and Size of Wall
Area of wall feet squared, x
64
144
400
Amount of paint (pints), y
4
9
25

How much paint should the painter expect to use to paint a wall with an area of 256 square feet?
16 pints
32 pints
128 pints
225 pints

Answer 1

There are 2 walls with an area of 20*8

2 walls that are 18*8.

Therefore giving us a total area of:

160*2 + 144*2 = 608 square feet

The ceiling 20*18 = 360 square feet

Total pr c: 968 square feet.

Multiply by 2 for 2 c

2*968 = 1936

Divide by 400

The nearest half gallon: 5.0 gallons

If you round to the nearest .5 it'll be 4.84

Answer 2

Never Mind the Answer is 16 pints

Answer 3

so if you check this my posted image - table - you see that the value of x is always equal 16y

64 = 16*4
144 = 16*9
400 = 16*25

so in this way you can calcule easy to get

256 = 16 *x

x = ?

hope this help you understanding easy

@XioGonz
@Laylalyssa

Answer 4

Good Job jhony!

Answer 5

ty