Which of the following contextual situations can be represented by the one step equation \( x+9=20 \) ? Sarah has 20 apples after buying 9 more. How many apples did she have before buying more? A gordener has 9 flowers in one section of a garden and 20 pencils. Alice buys 9 boxes of pencils. How many pencils does she have? Each bookshelf can hold 20 books. If there are 9 shelves on the book shelf and each is holding the same amount, how many books are on each shel?

A. Déterminer la forme canonique de chacun des polynômes suivants : 1. \( P(x)=3 x^{2}-6 x+9 \) 2. \( P(x)=-5 x^{2}+3 x+12 \) 3. \( P(x)=9 x^{2}-7 x \)

[-/2 Points] DETAILS MY NOTES TGEIALG6 2.5.053. The perimeter of a regulation singles tennis court is 210 feet and the length is 3 feet less than three times the width. What are the dimensions (in ft ) of the court width length

(b) \( 27 x^{2}-3 y^{2} \)

Find the \( x \) - and \( y \)-intercepts of the graph of the equation. Do not graph the line. \[ \begin{array}{l}7 x+5 y=35 \\ x \text {-intercept } \quad(x, y)=(\square) \\ y \text {-intercept } \quad(x, y)=(\square)\end{array} \]

1) \( y=6 x \)