Please help, i need this answer by sunday .

A. 127 cm^2 b. 144.5 cm^2 c. 172 cm^2 d. 50 cm^2

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.

1jessica's home town is a mid-sized city experiencing a decline in population. the following graph models the estimated population if the decline continues at the same rate. select the most appropriate unit for the measure of time that the graph represents. a. years b. hours c. days d. weeks