Each of the following temperature ranges is in degrees Fahrenheit. Use the formula F=9/5C+32 to find the corresponding temperature range in degrees Celsius (using interval notation and assume inclusion).

Question

a. below 32 degrees
b. above 122 degrees
c. below 5 degrees
d. above −31 degrees

Answer 1

I will do one as an example
F=9/5 C + 32
5/9 F=C+5/9 *32
C=5/9 (F-32)
so F<5
C<5/9 (5-32)
C<5/9 (-27)
C<-15 deg