C. The same nonzero real number may multiply both sides of an equation without changing the equation's solution set, so \( a=b \) and \( a c=b c \) are equivalent equations as long as \( c \neq 0 \). Dolution set, so \( a=b \) and \( a c=b c \) are equivalent equations. shoose the correct example of the multiplication property of equality below. A. The equations \( x=3 \) and \( x+2=5 \) are equivalent. B. The equations \( x=3 \) and \( x+2=6 \) are equivalent. C. The equations \( x=3 \) and \( 2 x=5 \) are equivalent. D. The equations \( x=3 \) and \( 2 x=6 \) are equivalent.

Solve the equation by factoring. \[ b^{2}-20 b+100=0 \] \( b=\square \)

Guide Question: After the exercise routine, answer the following question. 1. Categorized aerobic, muscle strengthening, and bone strengthening activities from the sets of exercises you performed.

Question A high school freshman decided to start saving for college. Each week, \( \$ 35 \) is deposited into an account that starts with \( \$ 450 \). What is the \( y \)-intercept in this situation? Do not include units in your answer.

\begin{tabular}{|c|}\hline Peter and his friends ordered 10 pizzas. \\ They had \( 21 / 3 \) left. How much did they \\ eat? \end{tabular}

El análisis elemental de un compuesto orgánico indica solo la presencia de carbono hidrógeno y oxigeno con una fórmula minima \( \mathrm{CH}_{2} \mathrm{O} \). Si la masa molar de compuesto es aproximadamente \( 180 \mathrm{~g} / \mathrm{mol} \), entonces su fórmula molecular es A) \( \mathrm{C}_{2} \mathrm{H}_{4} \mathrm{O}_{2} \) B) \( \mathrm{C}_{3} \mathrm{H}_{6} \mathrm{O}_{3} \) C) \( \mathrm{C}_{4} \mathrm{H}_{8} \mathrm{O}_{4} \) B) \( \mathrm{C}_{5} \mathrm{H}_{10} \mathrm{O}_{5} \) E) \( \mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6} \)