How much money should be invested at an annual interest rate of 8% in order to earn $250 of yearly interest?

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

What is another way to express 36 +32

You are at a restaurant and owe $56.20 for your meal. you want to leave an 18% tip. approximately how much is your tip?