Jose has 4 times as many trading scares as philippe. after jose gave away 50 cards to his little brother and philippe gave 5 cards to his friend for his birthday, they each had an equal amount of cards. write a system to describe the situation and solve the system.

An isosceles triangle has two sides of equal length, a, and a base, b. the perimeter of the triangle is 15.7 inches, so the equation to solve is 2a + b = 15.7. if we recall that the sum of the lengths of any two sides of a triangle must be greater than the length of the third side, which lengths make sense for possible values of b? select two options.