There are 800 students in a high school. two-fifths of the students are freshman, and 3/4 of the upperclassmen (sophomores thru seniors) are involved in an enrichment. how many upperclassmen are not involved in an enrichment?

Ataxi cab charges $1.75 for the flat fee and $0.25 for each time. write an in equality to determine how many miles eddie can travel if he has $15 to spend.

On a piece of paper graph f(x)=5•(0.4)^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