Express in simplest form: 2x x 2 +7x+12 • x 2 −16 6 ⎛ ⎝ ⎜ ⎞ ⎠ ⎟+ 3−x 4 ÷ x 2 −9 12 ⎛ ⎝ ⎜ ⎞ ⎠ ⎟ − x−2 3

The length of a rectangle plus its width is 25 cm. the area is 156 square cm. what are the length and width of the rectangle? separate the answers with a comma.

Agarden consists of an apple tree, a pear tree, cauliflowers, and heads of cabbage. there are 40 vegetables in the garden. 24 of them are cauliflowers. what is the ratio of the number of cauliflowers to the number of heads of cabbage?

Jessica is organizing a guided tour of the rain forest. the average profit per person that the touring company makes is given by the rational expression 18x+35/x, where x is the number of people going on the tour. what does the numerator of this rational expression represents?