Given the triangle ABC with sides 12cm, 13cm and 17cm. Find; a) The angles of the triangle. b) Find the surface of the triangle ABC. c) The intertographic of the function y = sinx. d) Construct the graph of the function y = 2 + cos (x + 30) .e) Construct the graph of the function y = tan (3x).

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

step-by-step explanation:

i believe that the answer is

b. y-1=-2(x-4)

hope this !