1. Jeffery bought 203 sheets of stickers. Each sheet has a dozen stickers. He gave away 907 stickers family and friends on Valentine's Day. How many stickers does Jeffery have remaining? \[ -203 \] \( >04 \)

Solve the proportion. Round to four significant digits if necessary. \[ \frac{20 \text { in }}{35 \text { in }}=\frac{24 \text { in }}{x} \] \( x=\square \) in

\( f(x)=2 x^{3}-3 x^{2}-12 x, x \in[0,3] \) fhas a global minimus at \( x=2 \) fhas a global maximum at \( x=2 \)

2. Which shows 34638 rounded to the nearest whole number? a. 30.000 b. 34.600

multiplicar \( 1,3 x^{2}-x^{3} \) por \( -2 x \) 2) \( 9 x^{2} y-3 y^{2} \) por \( 2 a x^{3} \) \( 3, a^{2}-2 b+b \) por \( a b \) 4, \( \frac{1}{2} a-\frac{2}{3} b \) por \( \frac{2}{5} a b^{2} \)

3. Sarah knows that she can drive from her house to her job in 24 minutes. If her job is 18 miles away, then how many miles per minute does Sarah go?