Does this set of ordered pairs represent a function? why or why not? {(–5, –5), (–1, –2), (0, –2), (3, 7), (8, 9)} a. yes, because there are two x-values that are the same. b. no, because two of the y-values are the same. c. yes, because every x-value corresponds to exactly one y-value. d. no, because one x-value corresponds to two different y-values.

Let x = a + bi and y = c + di and z = f + gi. which statements are true?

Which expression is a perfect cube? a. x8 b. y24 c. m28 d. x64

Amass weighing 16 pounds stretches a spring 8/3 feet. the mass is initially released from rest from a point 2 feet below the equilibrium position, and the subsequent motion takes place in a medium that offers a damping force that is numerically equal to 1/2 the instantaneous velocity. find the equation of motion if the mass is driven by an external force equal to f(t)=cos(2t).