Everyday jin reads for 0.75 hours in the mornings and 1.25 hours in the evening. he uses the expression 0.75d + 1.24d to keep track of the number of hours he has read for any number of days, d. if jim reads for 20 days, how many hours has he read?

answer. overdue

Step-by-step explanation:

0.75d + 1.25dfor 20 days

0.75(20) + 1.25(20) = 15 + 25 = 40 hrs <===

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.