The equation is 41+5x for the cub's weight. x represents the month. So, it would be plugging 4 into x. Which gives us, 41+5(4)= 41+20 = 61. The cub will weigh 61 pounds in 4 months.
Step-by-step explanation: since 7+3 is in paranthases you add them first to get 10 and you multiply it by the 3 to get 30. We know its correct because 21+9=30.