Jeff and Nina each start a child-care service. Jeff spends $50 on supplies and plans to charge $10 per hour.
Nina spends $30 on supplies and plans to charge $8 per hour.

How many hours will Jeff and Nina have to work in order to earn the same amount of money?

They would not

Step-by-step explanation:

If i am correct, it isn't possible. Nina spends less money on supplies and charges less per hour. How can her prices get as high as Jeff?

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.

step-by-step explanation: