Just substitute the value of C in the expression and you'll get the value in Fahrenheit as your answer,
5) F = 1.8(35) + 32
F = 95 F
Just do same thing for all the points,
6) 50 C = 122 F
7) 20 C = 68 F
8) 65 C = 149 F
9) 90 C = 194 F
10) 80 C = 176 F
Hope this helps!