air sacs or alveoli the lungs and blood 3 transport
of respiratory gases
For one pair of socks you pay $12 plus $2 shipping.
Let's use x as the variable for how many pairs of socks someone might buy.
If someone buys 5 pairs of socks, they will pay $62. $12 * 5 + $2
So, we can write the expression as 12x + 2.
The congruency statements which we can use are
HLAASASASAS
