Answer:
Step-by-step explanation:
Given
Bob can Paint a fence in 5 hr
so full job can be done in 5 hr
in 1 hr
job is done
suppose Jen done the work in x hr
so in 1 hr
part of job is done
Also if they combine they can do the job in 2 hr
so in 1 hr 
so 



Answer:
a = 6
Step-by-step explanation:
–6(2 + a) = –48
-12 - 6a = -48
<u>+12 +12</u>
-6a = -36
a = -36 ÷ - 6
a = 6
Answer:
70
Step-by-step explanation:
It gives you two data points, (5, 350) and (6.5, 455). Constant rate of change also means slope, and the formula for slope is (y(1)-y(2))/(x(1)-x(2)). If you plug in the data points you got for this, you get (350-455)/(6.5-5), which is equal to 105/1.5. Drop that in a calculator and you get 70.
Answer:
122
Step-by-step explanation:
Round the two numbers to the nearest whole number and add.