Which of these is not a possible r-value?

a. 0.25
b. 1.5
c. -0.1
d. -0.75

Tom wants to order tickets online so that he and three of his friends can go to a water park the cost of the tickets is 16.00 per person there is also a 2.50 one-time service fee for ordering tickets online write an expression in term of n that represents the cost for n ordering tickets online

How many solutions does the nonlinear system of equations graphed bellow have?

Select the conic section that represents the equation. 3x2 + 3y2 -2x + 4 = 0