Given that a circle has a radius of 4inches and then a radius of 12inches after it has expanded. Given that the formula for a circle is ()=2, what is the rate of change?

Which of the following is true about fossils? a. the relative age of fossils cannot be determined from their position in sedimentary layers. b. fossils found in lower layers of sedimentary rock are as old as fossils found in upper layers of sedimentary rock. c. fossils found in upper layers of sedimentary rock are older than fossils found in lower layers of sedimentary rock. d. fossils found in lower layers of sedimentary rock are older than fossils found in upper layers of sedimentary rock.

Which of the following statements about the migration of workers to other countries is false?

Combine like terms. do not forget to use the distributive property to simplify the first term. 2(3y + 5k) - 2k