Quadratic functions (5 pts) A ball is thrown upward at 40 feet per second from the top of a building that is 30 feet high.
The height of the ball can be modeled by y = 30 + 40x - 16x2 feet where x is the number of
seconds after the ball is thrown. When will the ball first reach a height of 45 feet?

The magnitude, m, of an earthquake is defined to be m=log l/s, where i is the intensity of the earthquake (measured by the amplitude of the seismograph wave) and s is the intensity of a “standard” earthquake, which is barely detectable. what is the magnitude of an earthquake that is 1,000 times more intense than a standard earthquake? use a calculator. round your answer to the nearest tenth.

What term makes it inconsistent y=2x - 4 ?

Jane moves from a house with 71 square feet of closet space to an apartment with 45.44 square feet of closet space. what is the percentage decrease of jane’s closet space?