Answer:
The biggest common factor number is the GCF number. So the greatest common factor 72 and 80 is 8
Step-by-step explanation:
Answer:
b. 
f. 17 hours
Step-by-step explanation:
Charges for coming to my house = $68 (this will be the constant of the equation)
Amount charged per hour labor = $17
hours = h
Total amount paid to Mike = 357
The equation that represents this situation can be expressed as:

Solve for h
(subtraction property of equality)

(division property of equality)

Mike was in my house for 17 hours.
Answer:
Step-by-step explanation:
FOIL
x^2+11x-9x-99
x^2+2x-99
Answer:
80.3
Step-by-step explanation: