At Billy’s school, 80 students bone to school by bike or car. together the vehicles arrive to school in have 270 wheels. how many of each are used? Use “b” to represent the number of bicycles and “c” to represent the number of cars

This is so harddd! solve. 1 + 1 = solve 4 + 4 = solve 3 x 3

Suppose you are an avid reader and are looking to save money on the cost of books instead of paying about $20 for each book, you decide to look into purchasing a kindle for $120 you can purchase e-books for about $5 each 1. find the slope-intercept equation for the cost of the hard copy of books using x to represent the number of books 2. find the slope-intercept equation for the cost of the kindle with cost of e-books using x to represent the number of books

Write an expression that represent sarah’s total pay last week. represent her hourly wage with w monday 5 tuesday 3 wednesday 0 noah hours wednesday 8 only with w wage did noah and sarah earn the same amount last week?