4y - 20.......u need to find a common factor that can go into 4y and 20.....the only common factor is 4. So u can factor that out.....4 goes into 4 one time (but do not forget the y) and 4 goes into 20 five times....4(y - 5)
4(y - 5)...u can also check ur answer by distributing the 4 through the parenthesis and getting 4 * y - 4 * 5 = 4y - 20
Selection A is appropriate.
_____
20*1.1^n is the general expression for the cost n years in the future.
20*1.1^3 = 26.62 is the cost 3 years in the future.
Answer:
the log function is the "inverse" function of an exponential function
by definition 
then 
in this problem you have 
thus what x solves this ? 
the answer is 
thus (100,2)
B) the x intercept is when y = 0
x intercept at (1,0)
C) at 100, the curve will hit y = 5000
Step-by-step explanation:
