Answer:
The graph decreases from left to right.
Step-by-step explanation:
Given,
The original cost of the straw, P = $ 150.00,
The rate of decreasing per year, r = 1.5% = 0.015
Thus, the price after x years,
Which is an exponential function,
∵ An exponential function has,
Decay : if 0 < b < 1, ( decreasing from left to right )
Growth : if b > 1, ( increasing from left to right )
Since, 0.985 < 1
Thus, the graph is decreasing from left to right,
if x = 2,
C(2) = = 145.53375 ≠ 147.75,
I.e. (2, 147.75) does not lie on the graph,
If x = 3,
C(3) = = 143.35 ≠ 141.20
i.e. (3, 141.20) does not lie on the graph.