a) Complete the table of values for y = x2 – 2x - 3 А В -2 Х - 1 0 1 2. 3 4 С у 5 0 -3 -4 -3 0 5 34 b) i) Which of the three curves drawn matches y = x2 - 2x - 3? A -15-4 -3 0 I 2 B ii) Estimate the value of y when x= 2.5 -3 iii) Find the values of x when y = 1 5

I) Y = -2.25

Step-by-step explanation:

2.5 x 2.5 = 6.25.
2 x 2.5 = 5
6.25 - 5 = 1.25
1.25 - 3 = -2.25

what graph

step-by-step explanation:

d. 24+-0.114

step-by-step explanation:

the question requires us to calculate the approximate 95% confidence interval for the mean number of ounces of ketchup per bottle in the sample given the following statistics;

sample mean = 24

standard deviation, σ = 0.4

sample size , n = 49

the confidence interval for a population mean is calculated using the formula;

sample mean ± z-score*(σ/sqrt(n))

the z-score associated with a 95% confidence interval, from the standard normal tables, is;

1.96

substituting these values into the formula;

24 ± 1.96*(0.4/7)

= 24 ± 0.112

from the alternatives given, choice d is closest to the above expression;