Marco and his friends bought game tokens for $15 and three admission tickets to Fun Palace. Let t represent the cost of an admission ticket. Determine if each statement below is true or false.
a. The expression 3(t + 15) represents the total  amount that Marco and his friends spent.

b. If each admission ticket costs $2.50, then Marco and his friends spent $22.50 in all.

The table below shows the relationship between feet and yards.

Fill in each box to write an algebraic expression to represent the number of feet in any number of yards.
Words         ________ times the number of ____________.
Variable      Let ______ represent the number of_________.
Model         __________________________________
Expression  The number of feet in _____ yards is given by the expression___________ _____________.

Samantha ran five miles each day for seven days. Mariska ran seven miles each day for five days. Did the girls run the same distance?
Explain.