angel race book collection contains 40 books. she donates 15% of her to book to the houston library, sells 1/4 of her books to a rare book dealer, and sells 4 books on amazon. how many books remain in angel's book collection?

25% is the answer

step-by-step explanation:

what are the statements? and what do you mean by "216 2 1 6"?

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!