Answer: its not completed so half but the answer is 15x39
Step-by-step explanation: because y = 15x39
Solution: We are given:
Sales tax 
The pre-tax price of the supplies 
We have to find the total cost of the supplies.
We first need to find the sales tax on the price of supplies. The sales tax amount is:

Therefore, the total cost of the supplies = pre-tax price of the sales + sales tax amount
=$48 + $3.36
=$51.36
The answer is 6:
6+18= 24
24 divided by 4= 6
b=6
Answer:
Mathematics offers children a powerful way of communicating. They learn to explore and explain their ideas using symbols, diagrams and spoken and written language. Studying mathematics stimulates curiosity, fosters creativity and equips children with the skills they need in life beyond school.
Step-by-step explanation:
(It's not 4 though, I'm sorry)