The function r(x) is defined by the expression x^2+3x-28. Use factoring to determine the Zeros of r(x). Explain what the zeros represent on a graph of r(x)

Someone answer asap for ! the following statements are true about the coins calvin and sasha have collected. * calvin and sasha has the same amount of money. * calvin has only quarters. * sasha has dimes, nickels, and pennies * calvin has the same number of quarters as sasha has dimes. * sasha has $1.95 in coins that are not dimes. exactly how many quarters does calvin have?