Use the ratio table to find the unit rate with the specified units.

Jackson drew 4 hearts and 29 circles. what is the ratio of circles to all shapes?

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.

Use sigma notation to represent the following series for 9 terms.