A baseball player hits a home run. A spectator observes the trajectory of the ball and expresses the height of the ball using the equation s(t)= -(t-15) + 225. Calculate the instantaneous velocity of the ball at t=4 seconds where the distance is measured in meters. A. 44 m/sec
B. 30 m/sec
C. 26 m/sec
D. 22 m/sec

The appropriate solution is Option D (22 m/sec).

Step-by-step explanation:

The given equation is:

Now,  

The instantaneous velocity at t = 4 will be:

=

=

=

=

Thus, the above is the correct option.

a. 19,958,400

step-by-step explanation:

hope this

let x be the money she spent so that she can earn the free t-shirt.

since, she already spent $112.49

⇒

also, as per the statement: jennifer must spend $250 or more in order to qualify for a free t-shirt at the store.

then,

we have an inequality i.,e

subtract 112.49 from both sides we get;

therefore, $137. 51 more money does jennifer need to spend so that she can earn the free t-shirt