There are 8 teams playing in the tournament. Each team is scheduled to play every other team once. How many games will be played during the tournament? A. 15
B. 21
C. 28
D. 36
Who wants 50 points?!

Varies inversely with x. if y=8.5 when x=-1 find x when y=-1

Gabrielle's age is two times mikhail's age. the sum of their ages is 84. what is mikhail's age?

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