Answer:
8 cm
Step-by-step explanation:
Multiplication comes before any subtraction...so do 10 x 5 first
Remember that an exponent means repeated multiplication.
The exponent of 4 means you have four
's mutiplied together:

And then each exponent of 2 inside means you have two
's multiplied inside each set of parentheses.:

There are 8 b's there when you expand this out.
20x+30y= c(total cost of money)
Part B: 20(10)+5(30)
200+150=$350
Correct me if I’m wrong but I’d go with
B). 34, 55