Identify the vertex focus and directrix of the graph x^2-8x-28y-124=0
a. vertex (4,5) focus (4,2) directrix y=2.
b. vertex(-4,5) focus (0,7) directrix y=7
c. vertex (4,-5) focus (4,2) directrix y=-12
d. vertex (-4,5) focus (4,-12) directrix y=2

What are the solutions of the system? y = x^2 + 2x +3y = 4x - 2a. (-1, -6) and (-3, -14)b. (-1, 10) and (3, -6)c. no solutiond. (-1, -6) and (3, 10)

The number of chocolate chips in a bag of chocolate chip cookies is approximately normally distributed with a mean of 12611261 chips and a standard deviation of 118118 chips. (a) determine the 2626th percentile for the number of chocolate chips in a bag. (b) determine the number of chocolate chips in a bag that make up the middle 9696% of bags. (c) what is the interquartile range of the number of chocolate chips in a bag of chocolate chip cookies?

Alex measured the length of an item to be 3.7 cm. the actual length is 3.5 cm. what is alex’s percent error?