Robin read 63 books last year. She read 9 more books than Trisha. The equation b + 9 = 63 gives the number of books b
that Trisha read last year. Which is the solution of the
equation?

54

Step-by-step explanation:

63-9 you can't take 9 away from 3 so you must borrow, the 6 becomes a 5 and the 3 becomes 13. 13-9 is 4, bring the 5 down and you have 54.

System A: The lines overlap.

System B: The lines never intersect.

System C: The lines intersect at a point not on the y-axis.

System D: The lines intersect at the y-intercept.

Step-by-step explanation:

Got them right.