One of the customers has twisted her ankle.  you give her a lift in an electric buggy. you drive 5.9 kilometres to the customer.  you then drive 4 kilometres to the first aid station and finally 6.8 kilometres to the car park. how far have you driven altogether?

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.