5) Home Improvement you want to calculate the total square footage of your living room walls and ceiling so you can figure out how much paint you need. Two of
the walls are 8 feet high by 15 feet long, the other 2 walls are 8 feet high by 12
feet long, and the ceiling is 15 feet by 12 feet.
a) Write an expression to calculate the total square footage of the walls and
ceiling
b) Use the expression to calculate the total square footage.
c) If one gallon of paint covers 400 square feet, how many gallons of paint do
you need?
d) If each gallon of paint costs $28, how much will the paint cost?

38.5

step-by-step explanation:

lets say, first number = r

second number = 3r+7

total = 49

(r)+(3r+7)= 49

4r+7 = 49

4r = 42

r = 42/4

r= 10.5

3r+7 = 3(10.5)+7 = 38.5

hope this

a

step-by-step explanation:

when a number is between two straight lines it means the absolute value.

to find absolute value you need to know how many numbers is that number away from 0.

when finding absolute value the number will always come out positive

so absolute value of -3 is 3

absolute value of 3/2 is 3/2

absolute value of -2 is 2

absolute value of 3.5 is 3.5

absolute value of -1 is 1

now put these numbers in order:

a)   |-1|, |3/2|, |-2|, |-3|, |3.5|

6mm^3 or .6cm^3

      216

      /   \

  36     6

  /   \     /

6     6   6

factor trees are nice.

the answer is a.

step-by-step explanation:

in three games of golf, alex shot two under par four times.