I don’t understand this at all...can someone give me the answer or help me figure it out!?

The perimeter of a triangle is 69 cm. the first is 5 cm shorter than the second side. the third side is twice as long the first side. find the length of each side

What is the rate of change of a line that passes through (2,-5) and (6,-2)?

Sweet t saved 20 percent of the total cost of the green-eyed fleas new album let there be fleas on earth. if the regular price is $30 how much did sweet save