Select a Variable to Represent One Quantity and State What

question 37

Multiple Choice

Select a variable to represent one quantity and state what that variable represents. Express the second quantity in terms of
the variable selected.
-The average time it takes to get through a check-out line at a large wholesale club is 12 minutes more than 4 times the time it takes to get through a check-out line at a small grocery store, s.

• A) let s = time at small store, then 12s + 4 = time at large club
• B) let s = time at small store, then 12·4 + s = time at large club
• C) let s = time at small store, then (12 + 4)s = time at large club
• D) let s = time at small store, then 4s + 12 = time at large club