The equation we can use is
3 + 1/4c = 9
To find the total number of pieces, we would just solve the equation.
3 + 1/4c = 9
3 - 3 +1/4c = 9 - 3
1/4c = 6
inverse of division is multiputcation
4/1 *1/4c = 6*4
c = 24
There were 24 pieces of cake in total.
If I understand your question well, I suppose you mean

Step-by-step explanation:
singkamas: 60 pesos
ponkan: 110 pesos
For rounding, you look at the number to the right of it.
In this case, it would be 7
because 7 is greater than 5, it is rounded up (remember, 5 and up is round up, while 4 and lower is round down)
So her answer should be 1300
hope this helps
Answer:
B
Step-by-step explanation: