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As given, let Jim's rate = x
Let Pete's rate =y
Jim completed half the floor in 12 hours so it's
= 12x
Pete completed the other half of the floor in 10 hours so its
=10y
As floor area is equal so,
.............(1)
Now, given is that Pete can lay 25 more tiles per hour than Jim, this gives=
...... (2)
Putting the value of y from equation (2) in equation (1) , we get

So, the equation is : 
If you want to solve it, it becomes:



Hence, Jim can lay 125 tiles and Pete can lay 25 more so 125+25=150 tiles.
Simplifying:
2n-21=0.25n
We move all terms containing n to the left and all other terms to the right.
+2n-0.25n=+21
We simplify left and right side of the equation.
+1.75n=+21
We divide both sides of the equation by 1.75 to get n.
n=12
Answer:
The domain is -2, 0, 5.
The range is -3, 1, 7.
Step-by-step explanation:
Answer:
A
Step-by-step explanation: