Carl and derrick are part-time employees. they are paid different hourly
rates. one week, carl worked for 15 hours and derrick worked for 20
hours. their combined pay was $640. the next week, carl worked 20
hours and derrick worked 25 hours. their combined pay was $820. what
is carl's hourly pay rate?

answer: a and c are correct

step-by-step explanation:

the +5 is the vertical translation

the added negative symbol in front is the reflection over the y-axis

answer: need picture of problem

step-by-step explanation:

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.

answer: y = -2.5x - 15

              (-6,0)

step-by-step explanation: