Which of the following expressions represents a function?

a.{(1, 2), (4, –2), (8, 3), (9, –3)}
b. y2 = 16 − x2
c.2x2 + y2 = 5
d. x = 7

An assembly consists of two mechanical components. suppose that the probabilities that the first and second components meet specifications are 0.87 and 0.84. assume that the components are independent. determine the probability mass function of the number of components in the assembly that meet specifications. x

Empty box + box + empty box fill in the box is equal to 30 how

What is the area of the triangle 10 13 12