Estimate the amount of the tip by rounding the bill to the nearest dollar before calculating. 20% tip on a bill of $13.48
The amount of the tip is approximately $

The hypotenuse of an isosceles right triangle is $14\sqrt 2$. what is the area of the triangle?

Imogene invested $8,000 in a bank account that pays 8 percent simple interest at the end of each year. her friend invested the same amount in stocks where the growth of the investment is represented as 2,000 times the square root of 2 less than the time lapsed in years. if y1 and y2 represent the amount earned in dollars and t is the time lapsed in years, which system of equations correctly represents the situation?

The students in a class were asked how many siblings they have. the data obtained is represented in the dot plot. the number of students who have no siblings is . the number of students who have three or more siblings is .