Please help me to do this problem.

hear

y=-3x-7

or 3x+y=-7(1)

-6x-2y=14

or -14=6x+2y

or6x+2y=-14(2)

now,

add eq(1)×2and eq(2)

6x+6y=-42

-6x+2y=-14

4y=-56

or y=-56/4

or y=-14

y=-14

at last,

put in the value of y eq(1)

3x+y=-7

or 3x+(-14)=-7

or 3x=-7+14

or 3x=7

or x=7/3

( x=7/3 and y=-14) ans

b

step-by-step explanation:

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