The expression 12(x+4) represents the total number of cds mei bought in april and may at $12each. which property is applied to write the equivalent expression of 12x+48

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

Which expression is equivalent to 8(k + m) − 15(2k + 5m)?

On a string instrument, the length of a string varies inversely as the frequency of its vibrations. an 11-inch string has a frequency of 400 cylces per second. find the frequency of a 10-icnch string.