100 POINTS QUESTION ON ATTACHMENT

2π/3

Step-by-step explanation:

Given that ,

> y = 2 cos ( 3x - 2π )

Using the form ,

> y = a cos ( bx - c ) + d ,

we see that the period of the function is ,

> Period = 2π/ | b |

> Period = 2π/ 3

f(x) has value 150 at x= 0

and 0 at x= 3

so d(f(x))/dt = slope = -150/3 = -50

total amount of money that he should pay if he has not used his duty free exemption is $98

step-by-step explanation:

given a united states citizen returning to the states declares the following items at the customs office: 3 shirts at $8.50 each 2 dresses at $27.50 each 1 pair of gold cuff links at $17.50 per pair. we have to find how much he pay

cost of 3 shirts if one cost at $8.50 is

cost of 2 dresses if one cost at $27.50 is  

cost of 1 pair of gold cuff at $17.50

so, total amount of money that he should pay if he has not used his duty free exemption is   $25.5+$55+$17.50=$98