13/8 1 3/4 2 1/8 7/8 how do i solve this questions using patterns with fractions what is the rule?

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

What expression is equivalent to (2x-1)(x-3)?

Inez has a phone card. the graph shows the number of minutes that remain on her phone card a certain number of days.