William made 100 cupcakes this week. He baked 4 more than three times the total she made last week. Write an equation to find out how many cupcakes William baked last week.
A.100x+3-4
B.3x+4= 100
C.4x=100-3
D.4x+3= 100

I believe the answer is B.

It says that he made 100 cupcakes so we know that the total is 100. It says he baked 4 more than so that means that we are adding 4 to some value. It also says that he baked 3 times the total of cupcakes he made last week. Since the total for last week is unknown, we can express that as x.

So, your equation would be 3x+4=100.

Hope this helps!