C 59.5 because 8.5-1.5 =7 and 10-1.5=8.5 multiply 8.5x7=59.5 formula of the area of the rectangle is Length times width
In this problem, you combine the like terms...
4a - 3b + 7a
4a and 7a are like terms so you add them together.
4a + 7a = 11a
So, the answer is: 11a - 3b
45 is if you x it so it’s 45
Your answer for this question would be 15/c^8
7/24 would be ur answer...........hope its right!!!