Lily used 6 loaves of bread on a 7 day camping trip. How many loaves of bread will she use on her next camping trip that will last for 21 days?

see its case of direct variations

let required loaf of bread be x

ratio of bread =ratio of days

6:7=x:21

x=21×6/7

x=3×6

x=18

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!

5050

hope this !