X) 7.2.17 find the values of x 20 and y 20 that maximize z 13x+ 15y, subject to each of the following sets of constraints. (a) x+ ys 19 (b) x 4y 2 20 4x y 2 16 x +5y s 35 (a) select the correct choice below and, if necessary, fill in the answer box to complete your choice. ? a. 0 b. the maximum value occurs at (type an ordered pair.) there is no maximum value. click to select and enter your answerfs) and then click check answer. part remaining clear all

- "runner b is moving at a slower rate."

- "the graphs shown are graphs of distance(km) against time(min).

the slopes of this graphs are are given by:

slope = (change in y)/(change in x)

= (change in distance)/(change in time)

this is the formula for finding the speed. so, the slope of these graphs represent the speed of the runner.

taking each division in the graph to represent 1 on both axis:

runner a ⇒ speed = (2-0)/(1-0)

= 2/1

= 2 km/min

runner b ⇒ speed = (3-0)/(3-0)

= 3/3

= 1 km/min

this shows that   runner b is moving at a slower rate."

-22

times both sides by 2, times () by 8, add alile terms, move terms, add alike and caculate divide both sides by 3

what is the your question?