The way to answer this problem given different points and different equations in the choices is to do substitution and trial and error. In this regard, we substitute for example 4 to x in the equations and check which of them yields 89. The answer is D.
Answer:
A= -40
B= 16
C= 40
D= 50
Step-by-step explanation:
8 can go into 32 four times !
0.0000009
.9 times 10 is 9, so then you have to move it back -6 times behind the decimal.
