The value of y is directly proportional to the value of x. Given y = 12 when x = 36. What is the value of y when x = 60?

13

3

20

180

An ulcer medication has 300 milligrams in 2 tablets. how many milligrams are in 3 tablets?

Two numbers have a sum of -19. one number is x. what expression represents the other number?

Astudent draws two parabolas on graph paper. both parabolas cross the x-axis at (–4, 0) and (6, 0). the y-intercept of the first parabola is (0, –12). the y-intercept of the second parabola is (0, –24). what is the positive difference between the a values for the two functions that describe the parabolas? write your answer as a decimal rounded to the nearest tenth