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August 5, 2015

Homework Help: math ( CHECK MY WORK)

Posted by Sara! on Monday, May 24, 2010 at 7:55pm.

1. on 3 tests, a student scored a total of 258 points. if the student improved his performance on each test by 5 points, what was the score on each test

a. 81,86,91
b. 80,85,90
c. 75,80,85
d. 70,75,80
is the correct answer A.

2. an item costs x dollars. the tax rate is 5% of the cost of the item, or 0.05x. write and simplify an expression to find the total cost of the item with tax

my answer is: x+ 0.05

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