Guys please help me with this question, I’d appreciate it a lot

The lengths of all sides of a triangle are integers when measured in decimeters. one of the sides has length of 1 dm and another of 3 dm. find the perimeter of the triangle.'

What is the measure of ac? 5 units 13 units 26 units 39 units 3x- 2b 6x + 9

Solve each quadratic equation by factoring and using the zero product property. x^2 - 8x + 30 = 3x