It costs a company $2,000 to purchase a machine that produces reusable water bottles and $2.75 to make each water bottle

In a two-digit number the units' digit is 7 more than the tens' digit. the number with digits reversed is three times as large as the sum of the original number and the two digits. find the number.

Which of the following is an example of a rational number? a. π b. √ 9 c. √ 8 d. 3.8362319

Point r divides in the ratio 1 : 5. if the coordinates of e and f are (4, 8) and (11, 4), respectively, what are the coordinates of r to two decimal places?