a) Write an algebraic expression for the total number of centimeters in \( z \mathrm{~m} \) and 25 cm .

To express the total number of centimeters in \( z \) meters and 25 centimeters, we can convert meters to centimeters. Since there are 100 centimeters in a meter, \( z \) meters can be expressed as \( 100z \) centimeters. Therefore, the total expression is \( 100z + 25 \) centimeters. Now, let’s convert it into a total you can visualize: Imagine you’ve got \( z \) meters of ribbon, which stretches out to be 100 times \( z \) in centimeters. Add to that a sprightly 25 cm, and you’re ready to wrap up a gift or tie up an adventure! How fun is that?