HELP ME! A parabola has focus (5,7) and the directrix y=0 (the x-axis). Write an equation that says point (x, y) is on the parabola.

Solve the system of equations. y= 2x y= x^2 - 15

Arestaurant offers a $12 dinner special that has 5 choices for an appetizer, 12 choices for an entrée, and 4 choices for a dessert. how many different meals are available when you select an appetizer, an entrée, and a dessert? a meal can be chosen in nothing ways. (type a whole number.)

Which expressions are equivalent to -7+3(-4e-3)? choose all answers that apply: choose all answers that apply: a -4(3e+4)? 4(3e+4) b 12e12e c none of the above