An electrician charges a set fee for every house call and then charges an hourly rate depending on how long the job takes. let C represent the total cost of the visit when the electrician spends t hours at the house working. A graph of C is shown below. write an equation for C then State the slope of the graph and determine it's interpretation in context of the problem.​

relating to or denoting a system of numbers and arithmetic based on the number ten, tenth parts, and powers of ten.

step-by-step explanation:

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.