Cha cha cha real smooth what the answer?

Note: remember to show all of the steps that you use to solve the problem. be sure to use the text box where the question mark first appears to show your mathematical work. you can use the comments field to explain your work. your teacher will review each step of your response to ensure you receive proper credit for your answer. ! i will pay you to do this for me! will mark brainliest. i am not lying solve the following problem. jana buys a dress for $25.98 and a for $14.99. the total sales tax is $2.46. a. what is the total cost of her purchase? b. if jana pays with a $50 bill, how much change should she receive?

Diane owes $387 to her brother. if she debits her bank account $161.25 a month to pay him back, how many months will it take her to pay off the debt?

What is the number 321,000,000 in scientific notation? also what is the number? ?