(Q12) Javier and his brother David both got summer jobs. Last week Javier saved $20 and he earns $9 per hour at his part-time job. David saved $15
last week and makes $10 per hour at his part-time job. Which equation can
be used to find the number of hours, h, it will take for Javier and David to
earn the same amount of money at their new jobs?
9h + 20 = 10h + 15
20h + 9 = 15h + 10
O 29h = 25h
9h - 20 = 10h - 15

what?

step-by-step explanation:

what do you need with. i love quadrants. can you tell me ?

set each factor equal to 0

4x-3 = 0

2x-1 = 0

solve for x.

4x-3=0

4x=3

x= 3/4

solve for x. 

2x-1= 0

2x= 1

x= 1/2

eventually after a few more steps, your answer should be 1/2 is less than or equal to x and 3/4 is greater than or equal to x

it is 28 degrees colder in detroit than philadelphia.

step-by-step explanation:

what number adds to 21

-7 + ? = 21

-7 + 28 = 21

hope it