quiz answers calculus

quiz answers calculus

Use the disriminant to determine the number of real roots of

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Question 2	15 / 15 points

Use the discriminant to determine the number of real roots of

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Question 3	0 / 15 points

The monthly cost C of producing x widgets (in dollars) is modeled by the function shown below.

In this model 2500 represents fixed monthly costs and 4.8 is the individual cost of each unit being produced. The term 0.002x² represents additional costs that are significant only when the production level x is large. Such costs might include additional machinery, time-and-a-half pay, etc. If the maximum monthly cost the company can sustain is $10,500, determine the maximum production level. Round your answer down to the next whole number.

Answer:	765
Question 4	10 / 10 points

The following quadratic equation has one root:
Use the quadratic formula to determine this root. Express fractions in the form a/b (like you type a fraction into your calculator) where a and b have no common factors.

Answer:	-1/4
Question 5	15 / 15 points

Let . Use the quadratic formula to find the roots. (These roots are whole numbers.)

Answer for blank # 1:	3
Answer for blank # 2:	-5
Question 6	0 / 15 points

Use the quadratic formula to solve the equation below.

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	None of the others
Question 7	0 / 15 points

Let . Determine all values of k such that the quadratic equation f(x) = 0 has one real root.

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