The length of a red string is 7 less than 8 times the length of a yellow string.

Find the length of the red string when the length of the yellow string is 5.

Solution:

Let length of red string = a

Let length of the yellow string = b

Given that,

length of the yellow string is 5

b = 5

The length of a red string is 7 less than 8 times the length of a yellow string

Therefore,

a = 8b - 7

Substitute b = 5

a = 8(5) - 7

a = 40 - 7

a = 33

Thus length of red string is 33

answer: $34.31

step-by-step explanation:

$11.99 x 3 = $35.97

$35.97 - 10% = $32.37

$32.37 + 6% = $34.31