Sophia has $20. she buys a hair band for $3.99, gum for $1.29, and a brush for $6.75. not including tax estimate how much change she should receive. show your work

First I would add $3.99, $1.29, and $6.75 to see the total amount she spent.

3.99 + 1.29 + 6.75 = 12.03

She spent a total of $12.03. Now, subtract this amount from $20 to get your answer.

20 - 12.03 = 7.97

She should receive $7.97 in change.

I hope this helps!

-Mikayla

93.8

step-by-step explanation:

lets say, first number = x

second number = 3x+7

total = 49

(x)+(3x+7)= 49

4x+7 = 49

4x = 42

x = 42/4

x= 10.5

x= 10.5

3x+7 = 3(10.5)+7 = 93.8

hope this