Which two ordered pairs generated by x = y2 - 1 can be used to show that the
equation is not a function?
(0,-1) and (-1,0)
(-3,-2) and (24,-5)
(8,3) and (8,-3)
(3, 2) and (15,4)

Solve the triangle. a = 21°, c = 105°, c = 5

Solve these problems: 1.what is the perimeter of an equilateral triangle with sides measuring 6cm? 2. a regular pentagon has sides measuring 3.2 cm. what is its perimeter? 3. a regular decagon has sides of 3.5mm . what is it’s perimeter? 4. a regular octagon has a perimeter of 64cm. what is the length of one of the sides? 5. a regular hexagon has a perimeter of 72mm . what is the length of one of the sides? 6. what is the perimeter of a rhombus with sides measuring 11m?

Mrs. blake's bill at a restaurant is $42.75. she wants to leave the waiter an 18% tip. how much will she pay in all, including the tip?