A 300 gallon tank is filled with 100 gallons of water in which 10 pounds of salt is dissolved. Avalve is opened above the tank and water containing 2 pound of salt per gallon flows into the tank at a rateof 3 gal/min. Simultaneously, a drain is opened at the bottom of the tank allowing the solution to leave thetank at a rate of 1 gal/min.(a) Write down the initial-value problem that models the amount of salt in the tank.(b

- "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."

answer: 7. if the functions had a negative leading coefficient and is of even degree, which statement about the graph is true?

step-by-step explanation:

ιт ιѕ 12 αв

нσρє ι ¢συℓ∂ нєℓρ уα