Graph the ellipse. Label the intercepts.25x2 + y2 - 100 = 0
A. (-2, 0), (2, 0), (0, -5), (0, 5)
B. (-5, 0), (5, 0), (0, -2), (0, 2)
C. (-2, 0), (2, 0), (0, -10), (0, 10)
D. (-10, 0), (10, 0), (0, -2), (0, 2)
Answer: C
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Find numbers a and b, or k, so that f is continuous at every point.
A. a = 1, b = -2 B. a = 1, b = 2 C. a = -1, b = 2 D. Impossible
Solve the problem.Lonnie deposits $100 each month into an account paying annual interest of 7% compounded monthly. How much will his account have in it at the end of 10 years? Round to the nearest dollar.
A. $1382 B. $17,437 C. $17,308 D. $17,154
Find the determinant of the given matrix.
A. -71 B. -29 C. 29 D. -161
Solve the problem.When making a telephone call using a calling card, a call lasting 6 minutes cost $0.95. A call lasting 15 minutes cost $1.85. Let f(x) be the cost of making a call lasting x minutes using a calling card. Write a linear function that models the cost of a making a call lasting x minutes.
A. f(x) = 0.1x + 0.35
B. f(x) = -0.1x + 1.55
C. f(x) = 0.1x - 13.15
D. f(x) = 10x - 