Simplifying both sides of the equation then isolating the variable
Answer:
Option A. 
Step-by-step explanation:
we know that
The combined area of the 3 windowpanes and frame is equal to

using a graphing tool to solve the quadratic equation
The solution is 
see the attached figure
Answer:
a=9
b=9
c=18
Step-by-step explanation:
c(a+b)+a+b=36
2a+2b=36
a+b=18
c=18
The answer should be B because 4*4=16 so 60 -16 a day
Answer:
271
Step-by-step explanation:
4 hours and 31 minutes = 240 + 31 = 271 minutes