At cassie's cashew shoppe, a sign says,"today only: 20% off anything."maribel realizes that she has a coupon for 1/5 off the price of anything in the shop. which discount should she use, the 20% -off deal or the 1/5 off coupon? does it matter? explain.

If 10 men take 18 days to mow 60 acres of grass, how long will 15 men take to mow 80 acres?

Me solve this problem, and someone clearly explain to me how to solve it.1.) use the value of the discriminant to determine if the given trinomials has 2 real solutions, 1 real solution, or no real solutions.a.  x2  − 4x  − 7 = 0b. 4r2  + 11r  − 3 = 0c. 3m2  + 7 = 0d.  t2  + 2t  + 1 = 0

10 points? me . its important ‼️‼️