Answer:
B) $ 2.00
Step-by-step explanation:
Hi there!
Let x be equal to the cost of one slice of cheese pizza.
Let y be equal to the cost of one slice of mushroom pizza.
Create equations
We're given that Jack bought 3 slices of cheese pizza and 4 slices of mushroom pizza for a total cost of $ 12.50:
⇒ [tex]3x+4y=12.5[/tex]
And that Grace bought 3 slices of cheese pizza and 2 slices of mushroom pizza for a total cost of $ 8.50:
⇒ [tex]3x+2y=8.5[/tex]
Solve for y
[tex]3x+4y=12.5[/tex]
[tex]3x+2y=8.5[/tex]
Solve using elimination:
[tex]\hspace{10} 3x+4y=12.5\\- 3x+2y=8.5\\\rule{80}{0.5}\\\setlength\parindent{24pt} 2y=4[/tex]
Solve for y:
[tex]y=2[/tex]
Therefore, the cost of one slice of mushroom pizza is $2.
I hope this helps!
