Answer:
the cost is 2$ more answer choice is b
Step-by-step explanation:
All these can be done without a calculator by taking the factors of ten separately. We count zeros for the exponents.


I'll leave the rest for you or someone else, sorry.
500-100=400
5(400)=2000
399+10=409
2000+409+2409
5(2409)=12045
3(12045)-36135
so in total it's equal to 36135