How many cm in 1 and a quarter metres?

Solve 2x+y=3 x+y=5 in substitution method

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

1) you deposit $2,500 in an account that earns 4% simple interest. how much do you earn in eight years?