Question

Can someone tell me if I got these three Derivative math problems right?

Answer 1

Answer:

1.  2x

2. v(t) =2

3.  24mph

Step-by-step explanation:

1.  W(t) = x^2 -3

 dw/dt  = 2x dx/dt

2. v(t) =2

Take the derivative to get the acceleration

dv/dt = 0

The choice you picked has 0 velocity so it is not in motion

3. To find the velocity

x(7) - x(5)

---------------

7-5

2(7)^2 -2(5)^2

-----------------

7-5

2*49 - 2*25

---------------2

98-50

---------

2

48/2

24 mph