Functions How Are They Changing

If x and y are differentiable functions of t, and they are related by y=5x³ + 12

Find dy/dt   when x=2 and  dx/dt = -3 

dy/dt = ___

(Type in only the number, no space)

If x and y are differentiable functions of t, and they are related by y= 12x² - 10x

Find dy/dt   when x= -5 and  dx/dt = -4 

dy/dt = ___

(Type in only the number, no space)

If x and y are differentiable functions of t, and they are related by y=5x³ + 12

Find dx/dt   when x=3 and  dy/dt = -270 

dx/dt = ___

(Type in only the number, no space)

• 20cm²/min

• 80 cm²/min

• 40 cm²/min

• 10 cm²/min