Question

U dont have to do the sustem or varibke part, thx

Answer 1

Answer:

5. Katelyn worked 11 hours at the grocery store.

6. 5pounds of steak

Step-by-step explanation:

5. let x hrs be the no. of hours Katelyn worked at the grocery store.

amnt of money she earnt = 9x + (15-x)×15

= 9x -15x + 225

= -6x + 225

-6x + 225 = 159

6x = 225-159

6x= 66

x= 11

Katelyn worked 11 hours at the grocery store.

6. Let x be the pounds of steak he purchased.

total paid= 13.50x + (8-x)×3.25

= 13.50x -3.25x +26

= 10.25x +26

10.25x+ 26=77.25

10.25x = 77.25-26

10.25x= 51.25

x=5

try using the same method for qn 7 too