Fred and Barney go to a baseball game on Friday. They buy 4 hot dogs and 8 burgers and spend no more than $40. On Saturday they return to the same ballpark and purchase only 2 hot dogs and 5 burgers and spend no more
than $20. Which of the following cannot be a solution?

answer is 67%

step-by-step explanation:

1) 2/5

2) zero=0/1

3) zero=0/2

4) -4/5

5) undefined=3/0

you didn't post any answer choices, so its not 100% clear what your teacher is looking for

however, log(15/7) is equivalent to log(15) - log(7)

i'm using the rule log(x/y) = log(x) - log(y)

question 1: step-by-step explanation:

1/4 of 84 = 84÷4= 21