The rectangle of a length is three more than double the width if the perimeter is 90 inches find the dimensions

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

Find the domain and range of the following function f(x) = 51x - 21+ 4

What is the area of a rectangle with vertices (-8,-2), (-3,-2), (-3,-6), and (-8,-6)? units