Frodo ran 2 3/5 miles in 7/12 of an hour. How many miles can Frodo run in one full hour?

If you answer right ill give brainliest, : )

Write a polynomial function f of least degree that has rational coefficients, a leading coefficient of 1, and the given zeros. 3, 4+2i, 1+(sqrt)7 the answer is supposed to be: f(x)=x(^5)-13x(^4)+60x(^3)-82x(^2)- 144x+360 what am i doing wrong?

What is the perimeter of a rectangle if the length is 5 and the width is x?