Leroy's credit card has an APR of 21%, calculated on the previous monthly balance, and a minimum payment of 2%, starting the month after the first
purchase. His credit card record for the last 7 months is shown in the table
below.

The product of two negative rational numbers is always zero sometimes zero never zero

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