4. Karthika was in charge of bringing treats to the 1s annual Shakopee Llama Fashion Show - thanks Karthika! She spent $132 after buying frozen pizzas for $3 each and birthday cakes for $7 each. If she brought 24 items in total, how
many of each did she bring?
and the number of birthday cakes was
The number of pizzas was

the number of the people going.

step-by-step explanation:

the cost to buy one movie ticket is $7. if the total cost for the movie is a function of how many people go, then the input is : the number of the people going.

for this case we must apply distributive property to the following expression:

the distributive property states that:

then, when applying the property we have to multiply the -2 for each term within the parenthesis: