Juan exercised 120 minutes this week. If this was 10 minutes more than 2 times the amount of time he exercised last week, how many minutes did he exercise last week?

Ihave trouble finding the nth term of a linear sequence

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

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base