Question 4 In which quadrant does the point \( (6,-5) \) lie? III I I Question Help: Video Submit Question Jump to Answer

Which sets of ordered pairs represent functions from \( A \) to \( B \) ? (Select all that apply.) \[ A=\{1,2,3,4\} \text { and } B=\{-2,-1,0,1,2\} \] \( \{\{(1,0),(2,0),(3,0),(4,0)\} \) \( \{(1,1),(2,-2),(3,0),(4,2)\} \) \( \{(1,2),(4,0),(2,1)\} \) \[ \left\{\begin{array}{l}\{(1,-1),(3,2),(2,-2),(4,0),(2, \\ 1)\}\end{array}\right. \]

supply company manufactures copy machines. The unit cost \( C \) (the cost in dollars to make each copy machine) depends on the number of machines lade. If \( x \) machines are made, then the unit cost is given by the function \( C(x)=1.1 x^{2}-748 x+138,268 \). How many machines must be made to inimize the unit cost?

B. APPLICATION AND ANALYSIS ive the following problems. Show your workings clearly. Alice boarded a train at 0640 . After alighting at the train station, she walked for 25 minutes and reached her school at 0750 . How long did the train journey take?

\( \square < - \sqrt { 53 } k = \square \)

3. Let \( p(x) \) be th a horizontal dila (a) Find \( p(3) \)