Find the derivative of f(x)=√x+1 from the first principle

Divide: 1573 ÷ 7 = a) 222 r5 b) 223 r6 c) 224 r5 d) 224 r3

Ateam of runners is needed to run a 1 2 -mile relay race. if each runner must run 1 4 mile, how many runners will be needed?

Solve for x where 0 equation: cot^2x+2cotx+1=0