The formula for the circumference of a circle is c-28. Determine the circumference when the radius ris 10 cm. a 100 cm
C. 20 cm
b. 20 cm
d. 100 cm

Jack has a piece of red ribbon that is two times as long as his piece of blue ribbon. he says that he can use two different equation to find out how long his piece of red ribbon is compared to his piece of blue ribbon is. is he correct? explain his reasoning

If private savings 'v' = 0.75s and total savings 's' equals $4.20 billion, solve for public and private savings.

Graph the line that represents a proportional relationship between d and t with the property that an increase of 33 units in t corresponds to an increase of 44 units in d. what is the unit rate of change of dd with respect to t? (that is, a change of 11 unit in t will correspond to a change of how many units in d? )