Which property is illustrated by the following ?
if a = b + 7 and b + 7 = 9, then a = 9​

Step-by-step explanation:

Associative property

We know

a + (b + c) = (a + b) + c

a = b + 7

b + 7 = 9

Rearrange Eq. 2

9 = b + 7

a = b + 7

Hence,

Value of a is 9

your answer is a

step-by-step explanation:

plzplzplzplzplz mark brainliest i need it.

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