Answer:
make sure that sentence that comes before the colon is a complete, sentence
Step-by-step explanation:
One way to test whether you have used a colon correctly is to delete the information after the colon.

Combine like terms and "plug in" x into the equation to eventually get 34 after some addition
The second one if im not wrong
4% of 50000
(4/100) * 50000
2000