Find the coordinates of the vertex for the parabola defined by the given quadratic function.f(x) = 8 - x2 + 2x
A. (- 1, 9)
B. (- 1, - 9)
C. (1, - 9)
D. (1, 9)
Answer: D
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Find all local extreme values of the given function and identify each as a local maximum, local minimum, or saddle point.
A. 
saddle point
B. f
= 
, local minimum
C. f(63, 63) = 4,000,752, local maximum
D. f
= 
, local minimum
Solve the problem.Lotoff's Fashion Corner received a new line of paisley ties that had a net cost of $29 each. If they were given a series discount of 35/35, find the list price.
A. $8.70 B. $96.67 C. $68.64 D. $12.25
Solve the problem.The pH of a chemical solution is given by the formula pH = -log10[H+], where [H+] is the concentration of hydrogen ions in moles per liter. Find the pH if [H+] = 4.4 × 10-6. Round to the nearest hundredth.
A. 6.64 B. 5.36 C. 5.64 D. 6.36
Provide an appropriate response.Suppose you have to solve the following problem: "The length of a rectangle is 5 ft more than its width and its area is 84 square feet. Find its width and length." Let x represent the width of the rectangle and translate the problem into an equation. Do not solve the equation.
Fill in the blank(s) with the appropriate word(s).