77(7) = 539, the total points of all her tests
539 - 18 + 81 = correct total points = 602
602/7 = 86 which is the new average
Remember that when you find 30% of the number you have to subtract the 30% from your original $90 because it is 30% off the original price.
Answer:
thats why they put premium
Step-by-step explanation:
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Answer:
The equation is set up wrong
Step-by-step explanation:

So the problem ask to find or solve the problem using distributive property, so to calculate if using distributive property is just the same calculation if you are multiplying two number using a paper so the answer is 5(8)+5(90)+5(100), 40+ 450+500 = 990. I hope you understand my answer