NEED HELP PLEASE? #1. When solving a quadratic equation, what do the x-values stand for as it relates to plotting the graph of the equation?

#2. When solving by using the Quadratic Formula, what are the steps to follow?

#3. Sketch the graph of y=-2x^2+x+1 using your graphing calculator. What are the x-intercepts of this graph?.

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;

if you was gonna solve for a, a is a   < -12

rotation point l

step-by-step explanation:

b

step-by-step explanation: