The vertex of a quadratic function is located at (1, 4), and the y-intercept of the function is (0, 1). what is the value of a if the function is written in the form y = a(x – h)2 + k? a =

The circumference of a circle is 5 pi cm. what is the area of the circle?

The length of a shadow of the building is 36m. the length of the pole, which is perpendicular to the ground, is 1.9m. the length of the pole's shadow is 1.52m. what is the height of the building?

Acourt reporter is transcribing an accident report from germany. the report states that the driver was traveling 80 kilometers per hour. how many miles per hour was the driver traveling?