Answer:
hi
Step-by-step explanation:
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84 to 62. You have to subtract 146-84 to get the number of girls from the class.
To get the amount you need to subtract from 840, just turn 5% into a decimal, which is 0.05, then just multiply 0.05 by 840 and subtract that number from 840
Add 8.1 to both sides to find x!
hope this helps :-)