14 Physical education activities taught to learners at the middle childhood development level'should focus on ... a. creative and exploratory teaching strategies through dance, gymnastics, and b. sporting codes such as soccer, basketball, and tennis. c. acquiring relevant life skills. d. learning sports rules and developing specific skills.

To solve the rational equation \( \frac{5}{x-1}+\frac{3}{4}=\frac{1}{x} \), how can the expression \( \frac{5}{x-1} \) be rewritten using the least common denominater? a.) \( \frac{5 x}{x(x-1)} \) b.) \( \frac{8}{(x-1)} \) c.) \( \frac{20 x}{4 x(x-1)} \) d.) \( \frac{20}{4(x-1)} \)

1. \( \mathrm{H}_{2} \mathrm{SO}_{4}+\mathrm{NaOU} \rightarrow \)

In Exercises \( 9-18 \), write the function in the form \( y=f(u) \) an \( u=g(x) \). Then find \( d y / d x \) as a function of \( x \). \( \begin{array}{ll}\text { 9. } y=(2 x+1)^{5} & \text { 10. } y=(4-3 x)^{9}\end{array} \)

Emily threw a ball up in the air from her tree house. It followed the path given by the parabola \( y=-2 x^{2}+14 x+60 \), where \( x \) is the distance from the tree house (in feet), and \( y \) is the height of the ball (in feet). At what distance from the tree house did the boll strike the ground? a.) 10 feet b.) 6 feet c.) 3 feet d.) 5 feet

1) \( y=x^{8}-6 x^{4}+2 \) 2) 2) \( y=\frac{x^{2}-8}{x^{5}} \)