Answer:

Step-by-step explanation:
You have to do 225 plus 125 divided by 2 times 100 and that is your percent
Answer:
<em>X=2</em>
Step-by-step explanation:
3x-15=7-8x
3x+8x=7+15
11x=22
x=
x=2
22/28 converted to a percentage is 78.6%. (rounded to the nearest tenth)
78.6% of the class passed the test.
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