10 pts!! The water level of a bathtub was measured each minute. The graph models the linear relationship between the water level in the bathtub in inches and the number of minutes the water level was measured.
What was the initial depth of the water?

its going by threes

Step-by-step explanation:

from ( 4,3 ) ( 2,6 )

she played for 18.75 hours.

step-by-step explanation:

if she played 2/4 of a hour on tuesday. and there is 60 minutes in an hour and 60 divided by 4 is 7.5. and she played 2/4 of an hour on thursday then again 60 divided by 4 is 7.5, you add 7.5+7.5=56.25. now you have to do 1/4 of an hour, it equals 3.75. now you have to add them all up. 3.75+7.5+7.5=18.75

i hope this and i hope you get it right. it took me a while to get this done for you. : )