Sagot :
t- temperature in January
T-temperature in April
Δ- difference beteween temperature
Δ=T-t
Δ=30F-(-13F)=30F+13F=43F
T-temperature in April
Δ- difference beteween temperature
Δ=T-t
Δ=30F-(-13F)=30F+13F=43F