Which function is a quadratic function? a) y – 3x2 = 3(x2 + 5) + 1 b) y2 – 7x = 2(x2 + 6) + 7 c) y – 2x2 = 6(x3 + 5) – 4 d)y – 5x = 4(x + 5) + 9

Figure abcde is a regular pentagon. segment ae is located at a (2, 1) and e (4, 1). what is the perimeter of abcde? 4 units 6 units 8 units 10 units

Antonio made a scale model of a building. the model's scale is 1 inch to 235 feet and its height is 3.5 inches. what is the exact height of the actual building? enter your answer in the box.

How do i do this? i don’t understand