Which of the following is the simplified
form of a + 3a - 4(9 - a) ?
a. -36
b. 3a-36
c. 8a - 36
d. 80+ 36

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?

Adecorative window is made up of a rectangle with semicircles at either end. the ratio of ad to ab is 3: 2 and ab is 30 inches. what is the ratio of the area of the rectangle to the combined area of the semicircles? possible answers: a. 2: 3 b. 3: 2 c. 6: π d. 9: π e. 30: π

Drag the tiles to the correct boxes to complete the pairs. using the properties of integer exponents, match each expression with the correct equivalent expression.