exam Maths Puzzle Numerical Ability

Find c.(f+g)(3)
14. f(x)=-7+9;g(x)=2x-1

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exam Other Question

On the 24-mile trip to school, Brandon sauntered at a leisurely pace. Thus, he had to double his speed on the way back to complete the trip in 9 hours. How fast did he travel in each direction, and what were the two times? 10x-0.62=9(x-0.95)