Which quantity makes the equation true?
x + 3x + _ = 7x

Can someone check if i did this correct. it’s number 4 if you’re wondering.

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 - 4x - 5 = 0

Aswimming pool measures 22ft by 12ft and is 4ft deep. if the pool is being filled at 2.5 cubic ft per minute, how long will it take to fill the pool?