The school store is running a promotion on school supplies. different supplies are placed on two shelves. you can purchese 3 items from shelf a and 2 items from shelf b for $16. or you can purchase 2 items for shelf a and 3 from be for $14. how much more does one item on shelf a cost than an item on b? show work and explain.

3a + 2b = 16multiply by 2
2a + 3b = 14...multiply by -3

6a + 4b = 32 (result of multiplying by 2)
-6a - 9b = - 42 (result o multiplying by -3)
add
-5b = - 10
b = -10/-5
b = 2items on shelf B cost $ 2

3a + 2b = 16
3a + 2(2) = 16
3a + 4 = 16
3a = 16 - 4
3a = 12
a = 12/3
a = 4items on shelf A cost $ 4

an item on shelf A costs (4 - 2) = 2 dollars more then an item on shelf B

It creates dogx^2 and then flip your answer and multiply by 2

If you need an equation, it would be y=2x+8, y would be how long it grew, x being weeks.if you need how long he was asleep, it would be 4 weeks if he started with no beard, the equation would be x=8÷2if he did have a beard before hand, the equation would be 2w+x=8