For this case, the first thing we must do is define variables.
We have then:
x: number of checks.
y: total cost.
We now write the linear function that represents the problem.
We have then:

Then, Jerome issues 10 checks in a month.
Therefore, we evaluate the function for x = 10.
We have then:
Answer:
a monthly checking account will cost him about:
y = 12.5 $
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❖ 20% as as a fraction in lowest terms is 
Percents are out of 100% so write 20% out of 100% as a fraction:

Both the numerator and denominator can be divided by 20 so once divided, you get 
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Answer:
166.8 pounds.
Step-by-step explanation:
Let b be the number of batches baked and f be the total weight of flour.
We have been given that a cupcake factory has already used 22.8 pounds of flour today.
They are now making cupcakes that require 8 pounds per batch, so the weight of flour used in b batches will be 8b.
The equation representing the total weight of used flour is given as:
To find the total weight of flour used, when 18 batches are baked we will substitute b = 18 in our given equation.
Therefore, the total weight of flour used in baking 18 batches will be 166.8 pounds.
Answer: d. 2.52
Step-by-step explanation:
5x = 30.16 - 17.56
5x = 12.6
X = 12.6/5 = 2.52