In track practice, each runner took a certain number of minutes to complete 10 laps. Each runner is represented by an x.

What is the mode of the data?

What is the range of the data?

You may use the scratchpad to show your work.

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

Find the directions in which the function increases and decreases most rapidly at upper p 0p0. then find the derivatives of the function in these directions. f(x, y)equals=x squared plus xy plus y squaredx2+xy+y2, upper p 0p0left parenthesis 1 comma negative 4 right parenthesis

Which situation is an example of an observational study?