Which of the following correctly completes the square for the equation below? x^2 + 2x = 19
a. (x+2)^2=23
b. (x+2)^2=20
c. (x+1)^2=20
d. (x+1)^2=23

Find the x-intercept and y-intercept of the line. 3x + 5y = −15

The table shows the age and finish time of ten runners in a half marathon. identify the outlier in this data set. drag into the table the ordered pair of the outlier and a reason why that point is an outlier.

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 - 4x - 5 = 0