What is an expression equivalent to -4(-6m - 7)

Ineed on this question me get the answer

Your weight on the moon is relative to your weight on earth. neil armstrong weighed 360 lbs. in his moon gear while on the earth, but on the moon he only weighed 60 lbs. how much would a 150 lb person weigh on the moon?

Benefit(s) from large economies of scale, in which the costs of goods decrease as output increases. natural monopolles perfect competition