Answer:
4 markers will cost $3.8 and 10 markers will cost $9.50
Explanation:
Since we know that 5 markers costs $4.74, we would divide the price by the units to get to .95 (aka $0.95) and then we multiply by 4 to get to 3.8 (aka $3.80). After that, you multiple .95 (since that's cost per marker) by 10, and we would get to 9.5 (aka $9.50).
I hope this helped! Good luck on your project!! :)