Me with the ones you know, do more then three. show your work

1.  If Sam runs 2 miles in 1/3 of an hour, he runs 6 miles in an hour, so in 4/5 of an hour he runs 24/5 miles, or 4.8 miles.  E is the correct answer.

2.  With 568 books, 21 shelves will be completely filled before we have under 26 books left.  We then have 22 books left, so the last shelf contains 22 books.  B is the correct answer.

3.  We can add 5 to both sides to get 20 < 2x, so we have 10 < x, or x > 10.  D is the correct answer.

4.  John is currently x+3 years old.  In 6 years, he will be x+3+6=x+9 years old.  E is the correct answer.

5.  The corduroy suit now costs (100)(1-.05)=95 dollars, and the wool suit costs (300)(100+.1)=330 dollars.  The sum is thus 425 dollars.  D is the correct answer.

Hello!

the answer is:

the correct option:

b.

why?

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!