at a library book sale, there is one price for hardback books and one price for paperback books. last week, 70 hardbacks and 120 paperbacks were sold for a total of $165. this week, 80 hard backs and 180 paperbacks were sold for $210. write a system of equations that can be solved to find h, the price in dollars of each hardback book and the price in dollars of each paperback book

How many real-number solutions does the equation have? -4x^2 + 10x + 6 = 0 a. no solutions b. two solutions c. infinitely many solutions d. one solution

Martha has a deck of cards. she has lost some of the cards, and now the deck only contains nine spades, eleven diamonds, eight clubs, and twelve hearts. martha predicts that whenever she draws a card from the deck without looking, she will draw a club one-fifth of the time. which activity would best allow martha to test her prediction? a. randomly draw a card from the box and see if it is a club. b. randomly draw a card. then, continue to draw another card until all eight clubs are drawn. c. randomly draw and replace a card 120 times. then, observe how close to 30 times a club is drawn. d. randomly draw and replace a card 100 times. then, observe how close to 20 times a club is drawn.

Marking brainliest rewrite the equation x = 65 - 60p by factoring the side that contains the variable p.