Question 844164
You need to calculate the boundaries for the range of F, based on the C values of 5 and 30.  OHHHH, YAAAHH.... You must solve for F first!


{{{C=(5/9)(F-32)}}}
Multiplicative Inverse of (5/9);
Additive Inverse of -32;
Simplify if needed.
DONE!   You have the formula for F in terms of C.
( I did not show the steps.  You should do them.  I indicated how.)