Solution
-3b + 11 = -18 + 8b
-3b - 8b = -18 - 11
-11b = -29
b = 29/11
38% of 21,515,714 is 8175971.32 which can be rounded to 8,175,971.
Hope this helps :)<span>
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Answer:
JK got 30 answers correct on a 50 item test.
Step-by-step explanation:
It is given that:
Total items on test = T = 50
Fraction of total items that were answered correctly = 3/5
We simply have to multiply the total number of questions by the fraction of correct answers.
So,
The correct answered number of items are:

Hence,
JK got 30 answers correct on a 50 item test.
Question 4- is 32.25
question 5- is 12.4
question 6 -is 14/17
question 7 - is 10.7