I need answer for 8,9,10 please. Thanks

Part III - Working with a Pre-Defined Non-Linear Function Your third task is to analyze a given function using your graphing calculator. This task will require you to graph a function on your calculator and use your calculator to answer various questions. The Relation: The height in meters of a high diver during a dive as a function of time in seconds can be modelled by the function H(t) = -3(t - 0.5)2 + 28. Directions: Using your calculator, complete the following steps: 1) Graph the function and determine appropriate window settings. Record your window settings using the notation described on page 434 of your text. 2) Determine the Y-intercept of the function and describe what the Y-intercept represents. 3) Determine the maximum of this function and describe what the maximum of the function represents. You can find directions for calculating the max and min of a function on page 441 of your text. 4) Determine the positive X-intercept of this function and describe what this X- intercept represents. You can find directions for calculating the X-intercept of a function on page 438 of your text. 5) State the domain and range of this function using the proper notation. 6) Using your calculator, determine H(1.5) to the nearest tenth. You can find directions for this process on page 436 of your text. 7) Describe what the ordered pair from step 6 represents in terms of the function. 8) Using your calculator, determine H(t)=9 to the nearest tenth. You can find directions for this process on page 436 of your text. 9) Describe what the ordered pair from step 8 represents in terms of the function. 10) Explain whether or not values in quadrants II, III or IV have any value to this function. Make sure you provide an explanation of your reasoning. A "yes" or "no" isn't enough here