Find the equation of the parabola that has zeros of x = –1 and x = 3 and a y-intercept of (0,–9). Question 10 options:

A)

y = x2 – 2x + 9

B)

y = x2 – 2x – 9

C)

y = 3x2 – 6x – 9

D)

y = 3x2 – 6x + 9

One-third of the people from country a claim that they are from country b, and the rest admit they are from country a. one-fourth of the people from country claim that they are from country a, and the rest admit they are from country b. in a combined census of the two countries, one-half of the total claimed to be from a. what is the ratio of the populations of country a to that of country b.

Look at arnold's attempt to solve the equation for b: 3b = 12 b = 3 · 12 b = 36 describe the mistake that arnold made.

Which shows the first equation written in slope-intercept form? 1/2 (2y + 10) = 7x