Given the following factorable quadratic relations, sketch their graphs (include x-intercepts, y-intercept, and vertex). Show all work.
a. y = -x2 + 7x + 18
b. y = 2x2 + 17x + 21

Find the equation using the point (4,8)

How many grams the dog will eat in 3 days?

Do one of the following, as appropriate: (a) find the critical value z subscript alpha divided by 2 , (b) find the critical value t subscript alpha divided by 2 . 99%; nequals 17; sigma is unknown; population appears to be normally distributed.