Why is the percent increase from 45 to 75 not equal to the percent decrease from 75 to 45? Select three options.

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

Which statement describes surface features called maria on the moon

What happens to the area as the sliders are adjusted? what do you think the formula for the area of a triangle is divided by 2?