Question

Last weekend, the number of visitors at a zoo was z. This weekend, the number of visitors at the zoo can be represented by the given expression. 1.13z

Which set of statements is true?

Answer 1

The correct answer would be C, the amount of visitors increased by 13%. z is 100%, or the original number, and is already included in the equation as the 1 (1 is 100% in decimal form)

Answer 2

Answer: Choice C

Notice how z + 0.13z = 1z + 0.13z = (1+0.13)z = 1.13z

The 0.13z represents the increase of 13%