Question

Three friends bought 4, 6, and 8 books.

Answer 1

Answer:

B:7.5

Step-by-step explanation:

since 4 goes with 30, 6 goes with 45, and 8 goes with 60, you can see that 60-45 is 15 and 45-30 is 15 as well so the constant is 15, but the number of books is going up by two so the constant there is 2. So divide 15 by 2 and the answer would be C: 7.5.

Answer 2

Answer:

B. 7.5

Step-by-step explanation:

I just took the test on k-12 and it was correct.