HELP, AND EXPLAIN HOW YOU DID IT (I’m in 10th and I still struggle with this lol) extra p.

In the figure shown below, m < 40 and ab =8. which equation could be used to find x?

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

At 6 1/2 cents per pound of string beans how much does 7 pounds cost