How many whole groups of 1/4 are in 7/8

Which of the following is an example of a testable scientific hypothesis?

A.  

Peacocks have prettier tail feathers than pigeons do.

B.  

Roses grow faster in the Sun than in the shade.

C.  

Gorillas are happier in the wild than they are in the zoo.

D.  

Why do plants grow better in the Sun than in the shade?

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.