Athermometer at the park shows a reading of 86 fahrenheit, if the temperature goes over 32 celsius tom must have an extra break, he uses the formula to calculate the temperature in degrees celsius, f = 1.8c + 32, will tom get an extra break

Given that the temperature is at 86 F, for us to know if Tom will have an extra break we need to convert this into Celsius;
f=1.8c+32
86=1.8c+32
making c the subject we getL
86-32=1.8c
54=1.8c
thus;
1.8c=54
hence;
c=54/1.8
c=30
since the temperature is 30 Celsius which is less than 32 Celsius it implies that Top won't go for extra brake.

The discount is 8.70 . you dont tell us the percent of tax added so there is no way to find out, unless i'm not seeing anything. without tax its 37.70