1) Alexis Received an 85, 89, and 92 On Three Tests. How Many Does She Need To Score On Her Next Test In Order To Have An Average Of At Least 90?

Question

2) 1/5(30 + a)< 5

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Answer 1

1) See later post.

2) An inequality is treated just like an equation, except that multiplying/dividing by a negative value reverses the carat (< to >).

Multiply both sides by 5.

30 + a < 25

Subtract 30 from both sides.