Note first that several months have 30 days (each): April, June and September.
(A) could not be correct, since the month in question could have 28, 29 or 31 days.
(B) See (A), above. If the month in question does not have 30 days, then the month could NOT be April, June or September. Reject (B).
(C) You do this one, similarly to my responses to (A) and (B), above.
(D) This one is true, since we know that June has 30 days. If the month in question does NOT have 30 days, then that month could not possibly be June.
1 yard=3 feet so 14 feet=4 yards and 2 feet
The slope is the constant rate of change. In this case, the number is being multiplied by 3 each time
The slope is 3
“x represents number of chocolate truffles sold each day”
Represents amount of chocolate truffles sold per day