Use the discriminant to find what type of solutions (two rational, two irrational, one rational, or two nonreal complex) each of the following equations has. Do not solve the equation.7x2 = -5x - 1
A. two irrational solutions
B. two rational solutions
C. one rational solution
D. two nonreal complex solutions
Answer: D
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Find the length of the parametric curve defined over the given interval.x = 
(t2 + 5) 3/2, y = 5t, 0 ? t ? 1
A. 
B. 
C. 
D. 17
Provide an appropriate response.Change 70 kilometers to miles. (Round to nearest tenth; 1 mi = 1.6 km.)
A. 112.5 B. 112 C. 43 D. 43.8 E. none of the above
Solve the problem.The table shows the population of a city over the past five years.
We used these data to develop the quadratic equation 
, which models the population of the city y in millions in the year x, where x = 0 represents 1995, x = 1 represents 1996, and so on. Use the model to find the estimated population in the year 1998.
A. 71,628,000 B. 68,852,000 C. 1,490,000 D. 1,490,000,000,000
Solve the problem.A wire 20 feet long is to be cut into two pieces. One piece will be shaped as a square and the other piece will be shaped as an equilateral triangle. Express the total area A enclosed by the pieces of wire as a function of the length x of a side of the equilateral triangle. What is the domain of A?
What will be an ideal response?