4. Keith is in a hot air balloon that is 200 feet above the ground and is ascending 1 1/2feet per second. Erica
is in a hot air balloon that is 548 feet above the
ground and is descending 1 2/5 feet per second. After
how many seconds will the hot air balloons be the
same number of feet above the ground?

In the diagram of circle o, what is the measure of zabc?

Suppose that the price p, in dollars, and the number of sales, x, of a certain item follow the equation 4 p plus 4 x plus 2 pxequals56. suppose also that p and x are both functions of time, measured in days. find the rate at which x is changing when xequals2, pequals6, and startfraction dp over dt endfraction equals1.5.

Walking at a constant rate of 8 kilometers per hour, juan can cross a bridge in 6 minutes. what is the length of the bridge in meters?