Aplumber charged $12 for 15 minutes of work. at this rate, what would the plumber charge for 1 hour of work?

There are 4 15 minute periods in an hour, so you would multiply the 15 minute rate by 4 giving you 12•4. The answer is 48.

$ 48

Step-by-step explanation:

Given,

Total charge = $ 12,

Time = 15 minutes = hour,

( ∵ 1 hour = 60 minutes ⇒ 1 minute = hour ⇒ 15 minutes = = hour )

Thus, the speed of charge =

= $ 48 per hour,

Hence, the plumber charges $ 48 for an hour.

6, 10

9, -13

12, -21

18, -23

step-by-step explanation:

you just add 6 to the x-coordinate and subtract 10 from the y-coordinate.