5.1 Review Worksheet, Part 1 (continued)
34. The daily high temperature in Death Valley, California, in 2003 can be modeled by T ( d ) = − 0.0018 d 2 + 0.657 d + 50.95, where T is temperature in degrees Fahrenheit and d is the day of the year. What was the maximum temperature in 2003 to the nearest degree?
5.1.3 Solving Quadratic Equations by Graphing and Factoring Find the zeros of each function by using a graph and table. 35. f ( x ) = − x 2 + 4 x − 3 36. g ( x ) = x 2 + x − 6 37. f ( x ) = x 2 − 9
Find the zeros of each function by factoring. 38. f ( x ) = x 2 + 11 x + 24
39. g ( x ) = 2 x 2 + x − 10
40. h ( x ) = − x 2 + 9 x
41. f ( x ) = x 2 − 15 x + 54
42. g ( x ) = x 2 + 7 x − 8
43. h ( x ) = 2 x 2 − 12 x + 18
44. A bald eagle snatches a fish from a lake and flies to an altitude of 256 ft. The fish manages to squirm free and falls back down into the lake. Its height h in feet can be modeled by h ( t ) = 256 − 16 t 2 , where t is the time in seconds. How many seconds will the fish fall before hitting the water?
252
Made with FlippingBook flipbook maker