Answer: 10 - 2√21
Step-by-step explanation: I simplified your question by using an online calculator. :)
f(x) + g(x) = 3x³ + 8x - 24
that is 3x³ + 7x - 26 + x + 2 = 3x³ + 8x - 24
The car can travel 235.2 miles on 9.8 gallons. Just multiply 24 by 9.8.