Three runners A, B, and C race in four 100 m races with head starts. In the final race with no head starts, find the time difference (to 3 s.f.) between the winner and the third-place runner.
Determine if log3(x+23)=2 has x=−14 as a solution. A) True, −14+23=32. B) False, log of negative is undefined. C) True, −14+23>0, log defined for positives. D) False, −14+23=23.
Find approximate solution to x2−7x−3=0 using iterative process. Start with x=7, then find 2x−7x2+3 and compare to x. Repeat until solution to 4 decimal places.