100 parents of young children are asked if their school should build a new playground. Is this a biased sample?

Approximately 31000 citizens of a country dies in automobile accidents in 2015 express this toll in depths per day

Joe is mowing lawns to buy a new car. For every lawn that he mows he earns $20. Joe charges a one time clean up fee of $50 before he takes on a new client. The function that Joe uses to determine how much he will make is: f (x) = 20x + 50.

A scatterplot is made of a citys population over time. The equation that approximates the linear relationship between years and population is p=629t + 150,000 where p is the citys predicted population size and t is the number of years since 2000.

The scale on a map is 1 : 500000 Two towns are 7cm apart on the map

The Adams family has 10 children. The ratio of boys to girls in the Adams family is 1:1. How many girls are in the Adams family?

A sequence is defined that the first term is 4 and each term after the first term is found by adding 4/5 to the preceding term. What is the 8th term of the sequence?

A scientist is investigating a cell. The cell has a membrane thickness of 7.*10-8 m and has a surface area of 4.*10-8. The initial concentration inside the cell is n (0) = 0.6 M, and the scientist later observes that an (0.2) = 0.77 M.

13[42 - (2+4) second power]

Which is bigger 5/8 or 0.58

What is nine more than a number divided by - 4 when it is less than or equal to - 2