Question

Susan is a college student with two part-time jobs. She earns $10 per hour tutoring elementary students in math. She earns $15 per hour cleaning in the library. Her goal is to earn at least $240 per week, but because of college, she does not work more than 20 hours each week.

Part B

Which combinations allow Susan to work no more than 20 hours in one week and earn at least $240?

Select the three correct combinations

A. 9 hours tutoring and 10 hours cleaning the library

B. 10 hours tutoring and 10 hours cleaning the library

C. 11 hours tutoring and 8 hours cleaning the library

D. 12 hours tutoring and 8 hours cleaning the library

E. 13 hours tutoring and 7 hours cleaning the library

F. 14 hours tutoring and 7 hours cleaning the library

Answer 1

@dude @Mehek @Vocaloid

Answer 2

for each letter, add the hours tutoring + hours cleaning the library

let me know what you get for each letter A-F

Answer 3

A. 19

B. 20

C. 19

D. 20

E. 20

F. 21

Answer 4

good, so which letter(s) are bigger than 20?

Answer 5

21

Answer 6

good, so we can eliminate F

Answer 7

She earns $10 per hour tutoring elementary students in math. She earns $15 per hour cleaning in the library.

for each choice (A-F) multiply tutor hours by 10, multiply hours cleaning by 15, then sum the result

Answer 8

here is an example for A:

Answer 9

A. 9 hours tutoring and 10 hours cleaning the library

9(10) + 10(15) = $240

follow the same pattern for B,C,D, and E. let me know what you get.

Answer 10

B. 190

D. 800

C. 212

E. 214

Answer 11

check your math again

Answer 12

i did like

12(12) + 10(7) =

Answer 13

is that right ?

Answer 14

where are you getting 12 and 7??

Answer 15

8

Answer 16

here is B:
B. 10 hours tutoring and 10 hours cleaning the library

here are your steps:

1. multiply hours tutored by 10
2. multiply hours cleaned by 15
3. add your results from step 1 and step 2

let me know what you get. show all work.

Answer 17

B. 250 ?

Answer 18

good.

now repeat these steps for C, D, and E.

Answer 19

i just did it

Answer 20

C. 230

D. 240

E. 235

Answer 21

good.
A. 240

B. 250

C. 230

D. 240

E. 235

now, which letters are less than 240?

Answer 22

E.

Answer 23

good but there's one more, try finding it.

Answer 24

C.

Answer 25

good so your answers are a,b,d