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Quadratic Equations and Functions

4. 2
Solve 36x + 49 = 0 2
b. Find the x-intercepts of f(x) = 36x + 49.

Solve. Give the exact solution and approximate solutions to three decimal places, when appropriate.
2
6. 3x - 7 = 0

2
16. (t-2) = 25
2
For Exercsie 56. use the hang-time function V(T) = 48T , relating vertical leap to hang time.

56. Tracy Mcgrady, of the Houston Rockets, has a vertical leap of 40in. What is his hang time?

2
18. A. Solve: 49x - 14x + 1 = 0 2
B. Find the x-intercepts of f(x) = 49x - 14x + 1

22. 11(x - 2) + (x - 5) = (x + 2) (x - 6)

30. + =

2 2
34. (x + 3) + ( x - 1) = 0
2
10. The outside of a picture frame measures 14 in. by 20in.; 160in of picture shows. Find the width of the frame.

20. The hypotenuse of a right triangle is 22m long. The length of one leg is 10m less than the others. Find the lengths of the legs.

26. A turbo-jet flies 50 mph faster than a superprop plane. If a turbo-jet goes 2000 mi in 3 hr less time than it takes the super-prop to go 2800 mi, find the speed of each plane.

34. N= Number of phone calls between two cities
S
2 2 2 2
38. a + b + c = d , for c (Pythagorean formula in three dimensions)

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Quadratic Equations and Functions are investigated. The solution is detailed and well presented. The response received a rating of "5/5" from the student who originally posted the question.

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