The teacher gives the equation 4x__=12. Charlie finds the answer by writing and solving 12÷__=3. Explain why Charlie's method wo
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Hey there!
Let's call this "number" x. We want four times the sum of this number and 15 to equal at least 120.
Therefore, we want this number times four plus fifteen to be greater than or equal to 120. We have:
Distribute:
Subtract:
Divide:
Your answer is C.
Hope this helps!