An electrician charges a $40 dollar fee to make a house call plus an hourly rate for labor. If the total bill for a job that takes 2 hours comes to $99, what is the electrician's hourly labor rate

the electrician's hourly labor rate is $29.5

Step-by-step explanation:

Let x represent the electrician's hourly labor rate.

electrician charges a $40 dollar fee to make a house call plus an hourly rate for labor. This means that the total bill for a job that takes y hours would be expressed as

xy + 40

If the total bill for a job that takes 2 hours comes to $99, it means that

2x + 40 = 99

2x = 99 - 40

2x = 59

x = 59/2 = 29.5

answer: a

step-by-step explanation:

15%

step-by-step explanation:

use the table and count the number of guesses that has two correct answers.

the following are two correct answers

10010, 01100, 11000

a total of 3 numbers having 2 correct guesses out of 20 questions.

probability of getting 2 correct guesses = the number of questions getting 2 correct answers / total number of questions.

= 3/20

to convert it into percent multiply by 100, we get

= 3/20 * 100

= 15%

the answer is 15%

you.