All you wanna do is divide-
490/3 1/2= 140
they make 140 buttons per hour
3,510
913=117
11730=3,510
3,510
For this case we have the following expression:

Rewriting the expression we have:
1) First we subtract the numbers within the parenthesis:

2) Then, we solve the exponents:

3) Then, multiplication:

4) Finally, the addition of numbers is made:

Answer:
the value of the expression is:
B: 29
Answer:
Surface Area is 87.6cm squared
Step-by-step explanation: