To express 1.8 as a percent, you need to follow these steps:
1. Understand the relationship between a decimal and a percentage. Percent means "per hundred," so you need to multiply the decimal by 100 to convert it to percentage form.
2. Take the decimal number 1.8.
3. Multiply 1.8 by 100:
[tex]\[
1.8 \times 100 = 180
\][/tex]
4. After multiplying, you get 180.
So, 1.8 as a percent is 180%.
Therefore, the correct answer is 180%.
