Principal ordered 100 pizzas for a total of $1255. Cheese pizza was $11.50 each, and Pepperoni pizza was $13.00 each. Write a system of linear equations that can be used to determine c, the number of cheese pizzas the Principal ordered, and p, the number of pepperoni pizzas the Principal ordered.

c+p=100

11.50c+13p=1255

Step-by-step explanation:  Since cheese pizzas cost $11.50 and pepperoni pizzas cost $13.00, then you would plug them into an equation where they equal to the total cost, $1255.

11.50c + 13p = 1255

in the attachment.   i didn't see your choices.   the word which means there is choices.

step-by-step explanation:

(x,y)

x tells you how much left or right you go from the origin

y tells you how much down or up you go from the origin

so for example (-3,2), you go left 3 and up twice. i denoted which of the ordered pairs is which in my graph.