Answer:
D
Step-by-step explanation:
An exponential function which crosses through (1,3) and (2,9) will have a base of 3 since the y values are multiples of 3.
3^1 = 3
3^2 = 9
This means that the function is y = 3^x.
The answers
1)-7
2)-1.5
3) 2
X²-8x
factor out x
x(x-8)
y=x(x-8)
