At 9:00 A. M. car A is traveling north at 70 miles per hour and is located 70 miles south of car B. Car B is traveling west at 40 miles per hour.

(a) Let (0,0) be the initial coordinates of car B in the xy-plane, where units are in miles. Plot the locations of each car at

9:00 A. M. and at 11:00 A. M.

(b) Find the distance d between the cars at 11:00 A. M.

Write an equation in slope intercept form of the line passes through the given point and is parallel to the graph of the given equation (0,0); y=3/8 x+2

At the olympic games, many events have several rounds of competition. one of these events is the men's 100-meter backstroke. the upper dot plot shows the times (in seconds) of the top 8 finishers in the final round of the 2012 olympics. the lower dot plot shows the times of the same 8 swimmers, but in the semifinal round. which pieces of information can be gathered from these dot plots? (remember that lower swim times are faster.) choose all answers that apply: a: the swimmers had faster times on average in the final round. b: the times in the final round vary noticeably more than the times in the semifinal round. c: none of the above.

The volume of gas a balloon can hold varies directly as the cube of its radius. imagine a balloon with a radius of 3 inches can hold 81 cubic inches of gas. how many cubic inches of gas must be released to reduce the radius down to 2 inches?