4hours worked for $12; 7 hrs worked for $28 are the pair of ratios equal? explain the reasoning

Both ratios are not equal.

Step-by-step explanation:

We have been that 4 hours worked for $12 and 7 hrs worked for $28. We are asked to determine whether the pair of ratios are equal.

First of all, we will find the ratio between 1st pair as:

Now, let us find ratio between 2nd pair as:

Since 1st pair of a ratio of 3 to 1 and 2nd pair has a ratio of 4 to 1, therefore, both ratios are not equal.

the third picture

step-by-step explanation:

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18