its definitely -2.5........
Answer:
See the image for solution.
Brainlist please
Step-by-step explanation:
By Remainder Theorem, f(5) = 91.
=> (5)³ - 4(5) + k = 91
=> 125 - 20 + k = 91
=> 105 + k = 91
=> k = -14.
18. x=31
19.x=15
20. a. x=5 WXY= 28
b. YXZ=28
c. WXZ=56
