Answer:
9
Step-by-step explanation:
31-4= 27
27/3 = 9
3(9)+4=31
B
Answer is 6x-13
Given
XZ=8x-18 and RZ=2x+5
XR=XZ-RZ
8x-18-2x+5
8x-2x-18+5
6x-13Ans
y= 128(1-.5)^t
