a How much is the sum of the number of children and adults that went to the performance?
B
b How would you find the price of 5 CDs? What happens if you insert 5 for c? Do the same with the video game costs.
A
a 150 = c + a
B
b 84.84 = 14.95c +39.99v
Practice makes perfect
a Let c and a be the number of children and adults that attended the performance, respectively. Since a total of 150 people attended the performance, we can express that fact using the following equation.
150 = c + a
b Since each CD costs 14.95 dollars, if we want to buy c CDs we will pay c* 14.95= 14.95c dollars.
Similarly, since each video game costs 39.99 dollars, to buy v video games we will pay v* 39.99= 39.99v dollars. Since Wade has spent $84.84 on c CDs and v video games, we can write this situation using the following equation.
