Astudent answered 86 problems on a test correctly and received a grade 78%, how many problems were on the test, if all the problems were worth the same number of points

answer4 to the second power is 16

and 4 to the third power is 64,

the answer is:

the correct option:

b.

to solve the problem, we need to remember how to operate to simplify exponential expressions using the logarithms.

we are given the equation:

then, using placing logarith with base 7 on both sides of the equation, we have:

so, rounding the obtained result to two decimal places (nearest hundreth), we have:

hence, we have that the correct option:

b.

have a nice day!