Which situation represents a proportional relationship?
a) julie sold 4 necklaces for $12 and 9 necklaces for $25.
b) jack biked 5 miles in 25 minutes and 8 miles in 40 minutes.
c) larry packed 24 apples in 6 boxes and 46 apples in 9 boxes.
d) allie put 14 pieces of candy in 2 bags and 30 pieces of candy in 4 bags.

B) Jack biked 5 miles in 25 minutes and 8 miles in 40 minutes.

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form

The ratio between the two variables is a constant called constant of proportionality k

Verify each case

A) Julie sold 4 necklaces for $12 and 9 necklaces for $25.

Multiply in cross

Is not true

therefore

The situation not represent a proportional relationship

B) Jack biked 5 miles in 25 minutes and 8 miles in 40 minutes.

Multiply in cross

Is true

therefore

The situation represent a proportional relationship

C) Larry packed 24 apples in 6 boxes and 46 apples in 9 boxes

Multiply in cross

Is not true

therefore

The situation not represent a proportional relationship

D) Allie put 14 pieces of candy in 2 bags and 30 pieces of candy in 4 bags

Multiply in cross

Is not true

therefore

The situation not represent a proportional relationship

which of the following can speed up the rate at which the liver breaks  

down alcohol?

question 1 options:

carbohydrates  

coffee  

nothing  

high-protein meals  

step-by-step explanation:

-8/2y-8=5/y+4-7y+8/y^2-16

we move all terms to the left:

-8/2y-8-(5/y+4-7y+8/y^2-16)=0

we can not solve this equation