Answer :
Just plug it in, they already gave you the equation.
1.8C + 32 = F
1.8(25) + 32 = F
45 + 32 = F
77 = F
77 degrees F
1.8C + 32 = F
1.8(25) + 32 = F
45 + 32 = F
77 = F
77 degrees F