-8c-18=-3(c-4)
solve for c

c= -6

Step-by-step explanation:

1) expand the equation to -8c-18=-3c+12

2) add 18 to both sides which then makes it -8c=-3c+30

3) add 3c to both sides which makes it -5c=30

4) then divide by -5 which makes it c=-6

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.