Which is the graph of f(x) = (x - 1)(x + 4)?

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²

What is the slope of the line that has an equation of y equals x -3

15. jiovanni is looking in to two different companies that offer study guides for math exams.test prep 101 charges a $5 flat fee and an additional $0.25 per problem.math charges a $2 flat fee and an additional $0.50 per problem.how many prablems would make the costs of the two companies be equal? varibles: equations/eniqualities{ {