This is a sketch of y = sin x. The vertex A is at (270°, -1)
Write down the coordinates of the vertex A of the curve with equation
a) y = sin (x + 90°)
b) y = sin (-x)

Arestaurant charges $100 to rent its banquet room for an event. it also charges $15 to serve dinner to each guest. write an equation for the total cost of the banquet room in terms of the number of guests. deine your variables. what is the total cost of the banquet room for 20 guests?

Solve the equation. 2x - 8(x+1)= 6(2x - 3)

The base of the rectangle pyramid is 13 inches long and 12 inches wide the height of the pyramid is 18 inches . what is the volume of the pyramid ?