(8/4) = (10/x)
8x = 4 x 10
8x= 40
x = 40/8
x=5
It will take 5 hours.
Answer:
<h2>the slope m = 3</h2>
Step-by-step explanation:
Look at the picture.
The formula of a slope:

From the graph we have the points (0, 4) and (-2, -2). Substitute:

Answer: -7
Step-by-step explanation:
−7
=−7
Answer:
9
Step-by-step explanation:
First, write the equation.
C(n) = 4 + 3n
We know that C(n) = 31, so we can substitute it.
31 = 4 + 3n
Subtract 4 from both sides to isolate the term with the variable.
27 = 3n
Divide both sides by 3 to get the variable by itself.
9 = n