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2. Kelsea needs a test average of at least 90 to get an "A-" this marking period in math. Her three test grades

are 87,91 and 86. What score must she get on her fourth test to receive at least an A- ?
Define variable:
Equation:
Solution:

can someone check this please :)

2. Kelsea needs a test average of at least 90 to get an "A-" this marking-example-1
User Eegloo
by
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1 Answer

6 votes

Answer:

Equation: 87 + 91 + 86 + x = 360

Solution: 264 + x = 360

x = 360 - 264

x = 96

Explanation:

1. Let's review the information given to us to answer the question correctly:

First three Kelsea's test grades : 87, 91 and 86

2. What score must she get on her fourth test to receive at least an A- ?

Define variable: x that represents the grade needed by Kelsea on her fourth test to receive at least an A-

Equation: 87 + 91 + 86 + x = 360

Solution: 264 + x = 360

x = 360 - 264

x = 96

Now you can understand if the previous work you did is correct

User Will WP
by
8.3k points
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