MAT 205 Wilmington University Introductory Survey of Mathematics Worksheet

MAT 205 Fall 2021LRA 9
3.
Use the quadratic formula to solve. 3×2 -2x – 1 = 0 Give your answer in fraction form.
SHOW YOUR WORK.
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1. The functions f, g, and h are defined as follows:
f(x) = -4x + 7 g(x) = -3×2 – 2 h(x) = 5×3 + 6
a. Find f(2).
4.
Use the graph of the parabola to fill in the answers.
b. Find g(-3)
a. Does the parabola open upward or downward?
10
C. Find h(-1)
b. Find the x-intercepts
c. Find the y-intercept
2.
Use the function f(x) = 2×2 – 3 to answer the following questions.
26
2
10
2
a. What is the y-intercept?
d. Find the coordinates of the vertex
b. What are the x-intercepts?
e. Find the equation of the axis of symmetry.
c. What is the vertex?
d. What is the Axis of Symmetry?
.
e.
Does the function have a maximum or minimum?
5. The Happy Cow Company is going to transport its milk to market. It will cost $4500 to
rent trucks plus $150 for each ton of milk transported. The total cost, Clin dollars). for
transporting n tons is given by the following function:
C(n) = 4500 + 150n
f. Graph the function.
a. If the total cost is $8,250, how many tons is the company transporting?
SHOW YOUR WORK.
b. What is the total cost for transporting 20 tons?
Extra Credit
Use the quadratic formula to solve. 2×2 = -5x + 1 Give your answer in decimal form rounded to
the nearest hundredth. SHOW YOUR WORK.