Alicia bought 4 t-shirts for $23.00. using the unit rate, how much would 6 t-shirts cost?

Try finding what the amount for 1 t-shirt would be: 23 divided by 4. We get 5.75. What we can do next is multiply 5.75 by 2 since we're trying to find out the cost of 6 t-shirts, this gives us 11.5. So now we add 23 to 11.5. We get 34.5. This means that 6 t-shirts would cost $34.50

the entire expression should be subtracted from 30. to subtract the quantity, distribute the negative sign, which changes the signs on the terms. so, the –2 changes to positive and gets added to 30 instead of subtracted from it.

hope this ! ^w^