Answer:
equation: 3x+x+15+x=180
Step-by-step explanation:
solve:
3x+x+15+x=180
5x+15=180
5x = 165
x = 33
3(33) =99
33
33+15= 48
99+33+48=180
Answer:
The equation of line will be 
Step-by-step explanation:
Given admission and
sample costs $
And admission and
samples costs $
Let cost of the sample is
and number of sample is 
Now, we will find the slope of line

Plug slope as
and point
in the equation we get,

The equation of line will be 
Answer:
420
Step-by-step explanation:
multiply them by each other
Answer: x = 11
Step-by-step explanation:
First, add 3 to both sides
0.4x - 3 = 1.4
+3 +3
0.4x = 4.4
Then, divide each side by 0.4 to isolate x
x = 11