Last week, Doug bought 12 books and 11 movies for a total of $116. Today, Doug bought 15 books and 16 movies for a total of $154.
Assuming neither item has changed in price, what is the cost of a
book in dollars?
PLEASE HELP URGENT

The vertex of this parabola is at (-2,-3). when the x-value is -1, the y-value is -5. what is the coefficient of the squared expression in the parabola's equation?

Solve each quadratic equation by factoring and using the zero product property. 14x - 49 = x^2

Taylor wants to paint his rectangular deck that is 41 feet long and 24 feet wide. a gallon of paint covers about 350 square feet. how many gallons of paint will taylor need to cover the entire deck? round your answers to two decimal places when necessary.