Answer: $7.
Step-by-step explanation:
It is given that the printing company charges a certain amount for each shirt plus a setup fee of $40.
Let x be the cost of each t-shirt.
There are 21 students in the drama club. So, total cost of 21 t-shirts is

It is given that the t-shirt order costs a total of $187.



Divide both sides by 21.


Therefore, the cost of each t-shirt is $7.
Answer:
30
Step-by-step explanation:
15x2=30
10x3=30
So firstly, subtract x on both sides: 
Next, divide -2 on both sides, and your answer will be y = 1/2x - 3/2 , or the last option.
Answer:
14.52 seconds.
Step-by-step explanation:
We have been given that the height of the rocket, y in feet, is related to the time after launch, x in seconds, by the given equation