How do you write 9.88 ×10 square in standard form

Can someone me i’m confused. will give brainliest and a whole bunch of points

You are at a restaurant and owe $38 for your meal. you want to leave a 20% tip. how much will your tip be?

Question 5 of 10 2 points if a population is a sample of the population could be a. registered voters; all citizens o o b. baptists; all religious people o c. people who purchased shoes; all customers o d. the entire school faculty; math teachers