A baby elephant weighs 150 pounds when born. It gains 2 pounds per day during the first year. How many days will it take the elephant to weigh a total of 224 pounds? (1 point)
The elephant gains 2 pounds per day, so it needs to gain a total of 224 - 150 = <<224-150=74>>74 pounds.
It will take the elephant 74 / 2 = <<74/2=37>>37 days to weigh a total of 224 pounds. Answer: \boxed{37}.
Reann has stickers. She gives her friend half, and then her brother gives her 8 new ones. She ends up with 12 stickers. How many did she start with? Identify the operations needed to solve this problem. (1 point)
• subtraction and multiplication
O addition and multiplication
O addition and division
O subtraction and division
To solve this problem, we need to use subtraction and addition.
First, Reann gives half of her stickers to her friend, so she is left with 12 - (1/2)x stickers.
Next, her brother gives her 8 new stickers, so she now has 12 - (1/2)x + 8 stickers.
We can set up an equation to represent this situation:
12 - (1/2)x + 8 = x
Now, we can solve for x by combining like terms and isolating the variable:
20 - (1/2)x = x
20 = (1/2)x + x
20 = (3/2)x
To get rid of the fraction, we can multiply both sides of the equation by 2:
40 = 3x
Finally, we can solve for x by dividing both sides of the equation by 3:
40/3 = x
Therefore, Reann initially had 40/3 or 13 and 1/3 stickers. Answer: O subtraction and division.