Answer:
I think C. is it
Step-by-step explanation:
(3^2)3=27
27/3^x=3
3(3^x)=27
3^x=9
x=2
Y+9=10
always remember that sum means addition
hope this helps <3
Answer:
-2x^2
Step-by-step explanation:
Simplify
x^-1 - 2x^2 - x^-1
becomes
-2x^2
Answer:
-1
Step-by-step explanation:
The shape of the graph is curved upwards
That mean the value of a is negative. Thus -1 is the suitable answer