What’s the best and fastest way to do practise test 3, section 3, question 15? How would you interpret the equation? (which I find very confusing and difficult)
If the equation is confusing for you, try plugging in! The three statements you’re evaluating are about 1 degree increases, so plug in 0 and 1 for F and see what happens to C. Then plug in 0 and 1 for C and see what happens to F.
That tells you that a 1 degree increase in F results in a increase in C.
Because , that tells you that a 1 degree increase in C results in a 1.8 degree increase in F.
That’s enough to choose choice D.