The graph shows the relationship between a gift card balance and the number of visits to a smoothie shop.
What is the amount spent on each visit to the
shop?
Smoothie Gift Card
$18.00
20
18
$4.00
16-
$3.00
14
12
.
$6.00
Balance ($)
10
.
8
6
4-
2
1 2 3 4 5 6 7
Number of visits
8 9

Amass weighing 16 pounds stretches a spring 8/3 feet. the mass is initially released from rest from a point 2 feet below the equilibrium position, and the subsequent motion takes place in a medium that offers a damping force that is numerically equal to 1/2 the instantaneous velocity. find the equation of motion if the mass is driven by an external force equal to f(t)=cos(2t).