4. Henry is a carpenter. He received an order to make an attractive and light weight metal frame door. He has two options: one is an iron frame door. The
second is an aluminum frame door.
The volume and density of the iron frame is respectively 1350 ml, and 7.87 g/ml.
The volume and density of the aluminum frame is respectively 2850 ml and 2.7
g/ml.
The customer wants the lightest door frame possible. Which one is the right
option for the door?

so, converting firstly the mixed fractions to improper fractions and then "adding".

b. y = 4x - 2

step-by-step explanation:

to find a parallel equation to an equation, make sure both equations have the same slope but different y-intercepts.

y = 4x + 1

4 = slope

1 = y-intercept

y = 4x - 2

4 = slope

-2 = y-intercept

they both have the same slope but different y-intercepts, so, b. is the correct answer.

and to check your work, you can graph both equations. : )

it is 10.6 according to my calculations

answer is (b.

164 ft2)

a base  

18

b base  

7

h height  

8