Determine whether or not the graph represents a function.

A. function
B. not a function


Answer: A

Mathematics

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Solve.The amount of particulate matter left in solution during a filtering process is given by the equation  where n is the number of filtering steps. Find the amounts left for  and  (Round to the nearest whole number.)

A. 800, 25 B. 1600, 50 C. 800, 50 D. 800, 12,800

Mathematics

Evaluate the expression.-73

A. 21 B. -21 C. -343 D. 343

Mathematics

Solve using the quadratic formula. Use a calculator to approximate the solutions to the nearest thousandth.6x2 - 16x + 7 = 0

A. 1.052, 2.615 B. 0.652, 2.215 C. 0.552, 2.115 D. -0.448, 1.115

Mathematics

Find the domain and range of the inverse of the given function.f(x) = 3.9 - 2.25x

A. Domain: all real numbers; range: [3.9, ?) B. Domain and range: all real numbers C. Domain: all real numbers; range: (?, 3.9] D. Domain: [3.9, ?); range: all real numbers

Mathematics