How many points x student needs to score on a test worth 50 points to get a test score of 40

Use set buikder notation to represent the following set: {, -2, -1, 0}

When the ball has traveled a distance of

The point a is at –2 and the point b is at 7. marissa would like to divide this line segment in a 4: 3 ratio, and she would like to use the formula x = (x2 – x1) + x1. what values should she substitute into the formula? a = a + b = x1 = x2 =