Take 180 subtract 47 and 43. You get 90. So it would be C.
First we find the slope m as follows:

So the equation is of the form:
y = 5x + b
When x = 1, y = 5. Therefore b = 0.
So the equation is:
y = 5x
Answer:

Step-by-step explanation:
The given equation is in exponential form:

To find
we need to write it in logarithmic form:
⇒ 
⇒ 



To prove this, we can substitute the value into the given equation



Therefore, the answer is 