Answer:
3610
Step-by-step explanation:
The approximate percent increase in the average grade is 21.43%.
<h3>
What is the percentage increase?</h3>
Percentage is a measure of frequency that expresses a number as a value out of hundred. The sign used to denote percentage is%.
Percentage increase = (new grade / initial grade) - 1
(85 / 70) - 1 = 0.2143 = 21.43%
To learn more about percentages, please check: brainly.com/question/25764815
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Answer:120.75
Step-by-step explanation:
Multiply
Step 1: 8.50x21
Multiply
Step 2: 2.75x21
Subtract
Step 3 : 178.50 - 57.75
The answer would be step 3 but not positive this is the correct answer but hope this helps <span />
