What is the answer to this?

D: 1 hour 48 minutes

Step-by-step explanation:

9 hours as minutes would be 540 minutes. 1-0.25-0.3-0.25=0.2. Nathaniel spent 20% of the 540 minutes reading. 0.2•540=108. 108 minutes is 1 hour and 48 minutes.

D. 1 hour 48 minutes

Step-by-step explanation:

100-25-25-30=20

20% was spent reading.

20% of 9 is 1.8

1.8 hrs is 1 hrs and 48 mins.

if x decreases by 4 then y increases by 10

step-by-step explanation:

the answer would be c:   ax + b = ax + c

step-by-step explanation: