Step-by-step explanation:
remember, a probability is ultimately always
desired cases / total possible cases
what are the total possible cases for our question here ?
all registered voters in 2009 :
640 + 960 + 320 = 1920
the desired cases (not republican) out of all these 1920 possibilities are
640 + 320 = 960
so, the probability for a registered voter to not be republican was
960 / 1920 = 1/2 = 0.5
1) plug -5 in for the place of x.
2) solve -(-5)^2
3) f(-5)=25
156/4=39 miles per gallon. 39*12 gallons is 468 miles, and 6 gallons is 234.