Choose all that give the correct expression. a) steven lost four $10 bills, and now he has −$40. −4 × 10 b) if i lose 8 pounds per month for 3 months, my weight will change −24 pounds total. 3 × (−8) c) sarah spends $2 for each fare on the commuter train. she rides the train 10 times during a week. 2 × (−10) d) pat and amy were on a diet for 4 months. pat lost an average of 3 pounds a month, and amy lost an average of 4 pounds a month. 4((−3) + (−4))

The statements that correctly represent the scenario stated are:

B. because losing 8 pounds is represented as -8 and doing this for 3 months would be 3 groups of -8 or 3 x -8

D.  because they showed the weight loss as a negative integer and then put those into groups of 4 each using the distributive property)

The error with the other 2 choices is that the negative number is not correctly representing which part of the problem is a decrease.  The negative sign is placed on the number of groups of.