Solve the following system by graphing and approximating the solution(s). show the points of intersection when graphing by hand. then chose from among the points below a point of intersection between the two functions. y = x^2 + 2x y = 2x +4 a.) (0, 4) b.) (0, 0) c.) (2, 8) d.) (-2, 4)

the solution is the point

step-by-step explanation:

we have

> equation a

> equation b

adds equation a and equation b

substitute the value of x in equation b to find the value of y

the solution is the point

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;

other answer is correct. i had used the radius of the radius somehow. a website: