It has one solution. when discriminant=0, tangent to the curve( means touches at one point ) hence one solution.
Answer:
95.4% of family vehicles is between 1 and 3 years old.
Step-by-step explanation:
We are given the following information in the question:
Mean, μ = 2
Standard Deviation, σ = 6 months = 0.5 year
We are given that the distribution of age of cars is a bell shaped distribution that is a normal distribution.
Formula:

P(family vehicles is between 1 and 3 years old)

95.4% of family vehicles is between 1 and 3 years old.
Answer:

Step-by-step explanation:
The exponential function that decrease by 15% every time x increases by 1 is given by:

We simplify the parenthesis to get:

Therefore the decrease by 15% every time x increases by 1 is

The second choice is correct.
Answer:
Option D
Step-by-step explanation:
correct answer on edge :)
Is that IXL? Anyway I think it’s 8 but I don’t think so anyway I tried don’t rely on me