Shirley got 72% on a Chemistry exam. The test was marked out of 150. (a) How many marks did she get?

(b) How many more marks would she need to get up to 80%?

Refer to interactive solution 17.45 to review a method by which this problem can be solved. the fundamental frequencies of two air columns are the same. column a is open at both ends, while column b is open at only one end. the length of column a is 0.504 m. what is the length of column b?

David is spreading mulch on a triangular area of his flower bed. the coordinates of the vertices of the area are (1, 3), (9, 3), and (4, 6). what is the area of the triangle if each square has an area of 3 square feet?

The number of fish in a lake can be modeled by the exponential regression equation y=14.08 x 2.08^x where x represents the year