I need help with question 6

Kapil needed to buy a long wooden beam. he went to two sawmills that each charge an initial fee plus an additional fee for each meter of wood. the following equation gives the price (in dollars) of a wooden beam from the first sawmill as a function of its length (in meters). p = 5+20xp=5+20x

What is the greater volume 72 quarts or 23 gallons

Does anyone know how to solve and graph this: 4 + | a + 2 | < 7the only part i don't get is the "4 +"