Covid19-1

Let the function f be defined as f(x)= 5x^2 - 7(4x+3). What values of f will give a result greater than 0? (select all that apply) f(3) f(5) f(7) f(9) Create another function for which f(2) is greater than zero. What time periods in the day experienced a depth change of 5 feet? (Select all that apply) 7 a.m. to Noon 11 a.m. to 6 p.m. 1 p.m. to 7 p.m. Midnight to 6 p.m. Name another time period during which the water depth changed by 5 feet. Which of these situations describes a rate of change of ½? Two points, where the difference in x-coordinates is -6 and the difference in y-coordinates is -3 I add 4 grams of salt for every 8 oz. of water. Line with points (0,2) (4,5) Line with points (4,2) (6,3) Give a situation that describes a rate of change of 1 Explain why your situation describes a rate of change of 1