Question

4. Suppose that r varies directly with s and inversely with t, and r = 2 when s = 3 and t = 12. What is the value of r when s = 5 and t = 4?

Answer 1

if r varies directly with s then r = s because as s gets larger r gets larger, if r varies inversly with t then r = 1/t because as t gets larger, r gets smaller.

Answer 2

yes

Answer 3

so r = s/t ?