Hello, Happy New Year,

I do know the answer,but I need the steps of the solution, andI'm stuck.

Please provide.

4. If a runner's distance is represented by d(x) = x3 – 12x2 – 42 and the time it took to travel that far is represented by t(x) = x2 – 2x + 1, how fast was the person running? a. s(x) = = X – 10+ -212-32 22-20+1 b. s(20) = 2 – 10+ -212-32 23-122-42 C. $(x) = -21% – 32 d. s(20) = X – 10 You can find speed by dividing the distance by the time. Next →