7y + 10x = 99
y - x = 2
y = 7 , x = 5
One pizza serves four people so, you will need 10 pizzas for 40 people so that make the answer (A.)
Answer:
X= $3.99
Step-by-step explanation:
X is the value of each book
Answer:

Step-by-step explanation:
The total of legs needed to build the stools are:


Likewise the total length of the legs is:


Lastly, the quantity of rods that needed to buy is:

