Emma throws an object upward from a hill that is 64 feet high. the object has an initial velocity of 48 feet per second. the function y = -16x2 + 48x + 64 represents the height of the object, y, in terms of the time elapsed after the object is thrown, x.

The correct options are B and D.

Step-by-step explanation:

Consider the provided function

The provided function is a quadratic function.

A polynomial function with highest exponent equal to 1 is known as linear functions. Nonlinear functions are all other functions.

The provided function has the exponent 2 which is greater than 1.

Thus, the provided function is a nonlinear function.

Also, the rate of change of a quadratic function does not remain the same.

Therefore, the correct options are B and D.

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step-by-step explanation: