Answer:
C
Step-by-step explanation:
![15x^{\frac{1}{3} }y^{\frac{1}{5} }\\\\=15x^{\frac{5*1}{5*3} }y^{\frac{3*1}{3*5} }\\\\=15x^{\frac{5}{15} }y^{\frac{3}{15} }\\\\=15\sqrt[15]{x^{5}y^{3} } \\\\](https://tex.z-dn.net/?f=15x%5E%7B%5Cfrac%7B1%7D%7B3%7D%20%7Dy%5E%7B%5Cfrac%7B1%7D%7B5%7D%20%7D%5C%5C%5C%5C%3D15x%5E%7B%5Cfrac%7B5%2A1%7D%7B5%2A3%7D%20%7Dy%5E%7B%5Cfrac%7B3%2A1%7D%7B3%2A5%7D%20%7D%5C%5C%5C%5C%3D15x%5E%7B%5Cfrac%7B5%7D%7B15%7D%20%7Dy%5E%7B%5Cfrac%7B3%7D%7B15%7D%20%7D%5C%5C%5C%5C%3D15%5Csqrt%5B15%5D%7Bx%5E%7B5%7Dy%5E%7B3%7D%20%7D%20%5C%5C%5C%5C)
5; 5,000 to 10,000
................................
Answer: $1690
Step-by-step explanation: because there are 3 people which means the flat fee would add up to 90 (because 30x3=90). Then you have to multiply 400 by 4 to get how much money they spent for renting the boat (400x4=1600). Lastly you add 1600 and 90 to get the final price. (1600+90=1690).
He can buy at least 21 magnets
