Oliver charges $15 an hour for guitar lessons. He pays a monthly rent of $50 for his guitar. How many hours must he work to have a profit of $250?

What is the most accurate measurement of 1 pound

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

Graph the linear function using the slooe and y intercept