Answer:

Step-by-step explanation:
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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 $
Take 20,000*1.03
do the same for 4% and 6%
And round to the nearest dollar
Answer:
50%
Step-by-step explanation:
Half of 68 is 34. We can see that only 34 showed up, making it a 50 percent decrease
5 * 198 = 5(100 + 98) = (5 * 100) + (5 * 98) = 500 + 490 = 990