These videos might help you
https://www.khanacademy.org/math/algebra/systems-of-linear-equations/systems-of-linear-equations-wor...
Answer:

Step-by-step explanation:
Hello, please consider the following.

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Do not hesitate if you need further explanation.
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THE CORRECT ANSWER IS:
Mary sells 43 units; Jay sells 51 units; Abby sells 54 units
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Answer:
8 1/3 cakes
Step-by-step explanation:
Step 1:
1 : 18 Ratio
Step 2:
1 : 18 = x : 150 Proportion
Step 3:
150 = 18x Multiply
Step 4:
150 ÷ 18 = x Divide
Answer:
x = 8 1/3
Hope This Helps :)
Answer:
x=10
Step-by-step explanation: