You have to multiply it all and get the answer
if you have a zero exponent, the number (or the base) equals 1
Answer:
8x-7x^2-39
Step-by-step explanation:
There is 168 hours in 7 days
There is 144 hours in 6 days
144-42=102
He is not at work for 102 hours on a 6 day week, I think.