Use the quadratic formula (x - 6)2 + 3 to answer questions 15 - 20. 15. a =
a. 1
b. 4
1
c.
4
d. 6
16. k=
1
a.
4.
b. 6
c. 2
d. 3
17. The vertex of the parabola would be located at which coordinates?
a. (-6,3)
b. (6,3)
c. (3,-6)
d. (3,6)
18. The parabola would open
a. Upwards
b. Downwards
c. To the left
d. To the right
19. The axis of symmetry is located at x =
1
a.
4
b. 6
c. 2
d. 3
20. Because of the value of the leading coefficient, the parabola would have a
opening.
a. Narrow
b. Wide
c. Left
d. Right

The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally distributed with a mean of 1252 chips and standard deviation 129 chips. (a) what is the probability that a randomly selected bag contains between 1100 and 1500 chocolate chips, inclusive? (b) what is the probability that a randomly selected bag contains fewer than 1125 chocolate chips? (c) what proportion of bags contains more than 1225 chocolate chips? (d) what is the percentile rank of a bag that contains 1425 chocolate chips?

Given the equation f(x)=a(b)x where the initial value is 40 and the growth rate is 20% what is f(4)

The management of a supermarket wants to adopt a new promotional policy of giving a free gift to every customer who spends more than a certain amount per visit at this supermarket. the expectation of the management is that after this promotional policy is advertised, the expenditures for all customers at this supermarket will be normally distributed with a mean of $95 and a standard deviation of $20. if the management wants to give free gifts to at most 10% of the customers, what should the amount be above which a customer would receive a free gift?