Answer
1 mile / 15.1sec * 3,600 sec / hour = 238.4105960265 miles / hour
Step-by-step explanation:
Answer: 210
55×12=660-500=160+50(down payment)=210
a) C = 40 + 30t
b) 280 = 40 + 30t
30t = 240
t = 8
The plumber worked 8 hours
