How long will it take greg to earn $500.00 round to the nearest hour

56 hours

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 or

Let

x -----> the number of hours

y ----> the amount earned in dollars

This problem represent a proportional relationship between the variable x and the variable y

Find the value of the constant of proportionality k

For (3,27) ---->

For (9,81) ---->

For (21,189) ---->

The constant of proportionality k is 9

The linear equation is

For y=$500

substitute in the equation and solve for x

Divide by 9 both sides

the answer to this question is yes

homozygous. one is homozygous, while two is heterozygous.