Postage of a magazine that weighs 85 g

$0.68

Step-by-step explanation:

So we know that $0.40 equals 50 g

Guess what.. XD      We can use a proportion, wow!

$0.40         x

=  

50 g           85 g

Cross multiply: 50x=34

divide both sides by 50 and you should get x=34/50 or 17/25 or $0.68

YAY! we are done! :D

okay, if you need all you need to do is ask, and i'll do my best to assist you.

step-by-step explanation:

step-by-step explanation:

always plug in x. in this case, x equals 4.

i'm going to first solve 4(2+3x)

1) 4(2+3(4)) use pemdas to solve.

i'm going to multiply whats in the parenthesis first, so 3 times 4=12.

2)4 (2+12) i'm then going to multiply 4 by both numbers in the parenthesis (because multiplying comes before adding)

4 times 2= 8.   4 times 12= 48

4) (8+48)= 56 (answer)

i'm then going to solve 8+12x and plug in 4 for x.

1) 8 +12(4)

multiplying comes before adding, so i'm gonna multiply 12 and 4.

12 times 4= 48.

2) 8+48=56

both equal the same!