Answer:
The plumber worked for 6 hours.
Step-by-step explanation:
400-250=150
150/25=6
The unit rate is 0.75 per x
Answer:
x = - 90
Step-by-step explanation:
Given
10x + 60 = 9x - 30 ( subtract 9x from both sides )
x + 60 = - 30 ( subtract 60 from both sides )
x = - 90
Answer: How can I help?
Step-by-step explanation: