Astudent answered 86 problems on a test correctly and received a grade 98% how many problems were on the test if all the problems were worth the same number of points

98% Grade was achieved, so 0.98 of the questions were answered correctly.

n = number of problems



Our final answer can't be a decimal, so we round it to:

The first one, i believe, would be correct. all the others have one thing in common, and that's that they have repeating numbers. in the second one, x and y have repeating 6's and 3's, and in the third, x and y have repeating 6's as well. in the last one, there are repeating 3's. the first one has no repeating numbers.

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.