Paul tosses a quarter off the Main Street bridge into the St. John's River. The distance, in feet, the quarter is above the water is modeled by the equation d( t ) = -12t^2 + 48t + 100, where t represents time in seconds. Part A: From what height was the quarter tossed? Part B: How long does it take the quarter to reach its maximum height? Part C: What is the maximum height of the quarter? Part D: How much time does it take for the quarter to hit the water?

Use addition and subtraction to simplify the following polynomials. a. add polynomials: (3 – 4x + 8x^2) + (–6 + 2x – 5x^2) step 1: rewrite the polynomials without the parentheses. step 2: write the polynomial in descending order and use parentheses around like terms. step 3: add the like terms identified in step 2 to simplify the polynomial. b. subtract polynomials: (3x – 5 – 7x^2) – (–2 + 6x^2 – 5x) step 1: rewrite the polynomials without the parentheses. remember to multiply each term in the second parentheses by –1. show your work. step 2: write the polynomial in descending order and use parentheses around like terms. step 3: add the like terms identified in step 2 to simplify the polynomial.

What could explain what happened when the time was equal to 120 minutes

What are the solutions of the system? solve by graphing. y = x^2 + 3x + 2 y = 2x + 2