<span>The cost that a carpet cleaning company charges is directly proportional to the number of rooms cleaned. The cost is $22 for each room.</span>
One solution!
Step-by-step explanation:
If we make a graph of the given equations, the lines will intersect at a point. We know that whenever lines intersect, it means the equations have one solution or a unique solution.
Answer:
Note that 
:
Once:
Therefore, the answer is letter B
12a + 6 + 3a = 15a + 2
15a = 15a - 4
0 = - 4
She earned 145$ a day because 725/5 is 145
