Answer:
See below :)
Explanation:
Pre-Solving
Given
We know that Emma already has 16 pieces of sea glass, and she is going to get 2 new pieces every day, and we want to find how many days it will take for Emma to get 60 pieces of sea glass.
Your question is only looking for us to write the equation, not to solve it.
Solving
Because Emma is getting 2 pieces of sea glass every day, over x days, Emma will get 2x pieces of sea glass (if x was 1, she will get 2 pieces after 1 day, if x was 2, she will get 4 pieces after 2 days, etc etc).
The 16 pieces that she starts off with does not get a variable attached to it, but it is still a part of the equation. You can think of it as where she already had 16 pieces before she started getting 2 pieces a day, but it will still count towards her 60 piece goal.
If Emma got 2 new pieces, then her total amount will be 2 + 16 = 18 pieces. If Emma got 4 new pieces, her total amount will be 4 + 16 = 20 pieces, and so on and so on.
Because of this, 2x pieces + 16 pieces will equal 60 pieces
Answer
As an equation, it will be:
2x + 16 = 60
And for the blanks, we can split up the parts of the equation (not including the equal sign), so that:
Blank 1: 2x
Blank 2 : +
Blank 3: 16
Blank 4: 60