Wanda already owns 7 hair bands, and additional hair bands are priced at 1 for a dollar. How much money does Wanda need to spand on new hair bands in order to own a total of 47 hair bands?

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

Multiply. write your answer in simplest form. 3/8 x 5/7

Evaluate 8j -k+148j−k+14 when j=0.25j=0.25 and k=1k=1.