3. Which of the following situations combine to make zero?
A. The temperature falls 10 degrees below zero and then rises to 100F.
B. A friend borrows $20 and promises to return double the amount.
C. A start-up business has income equal to its expenses.

step-by-step explanation:

we are given

since, we have to isolate x on anyone side

so, we can move all x terms on one side

subtract both sides by 2x

add both sides by 9

divide both sides by 4

we get

it is a. 4.2 because 7.6-3.4 gets the remaining length of 4.2. i might be wrong but i am pretty sure this is the answer.

"a" determine whether sage found the correct quotient. show your work

step-by-step explanation: