1. Use precise mathematical language to justify and explain each mathematical process. Use the rectangle with side lengths 5.22 – 8x + 9 and x + 5 for the following two questions.

1. What is the perimeter of the rectangle? Write a summary of the process used to determine the expression.

2. What is the area of the rectangle? Write a summary of the process used to determine the expression.

The table below shows the approximate masses of a dust particle and a grain of pollen. dust particle 0.000000778 g grain of pollen 0.00000000155 g the mass of a dust particle can be estimated and written in the form a × 10^b, where a = 8 and b = the mass of a grain of pollen can be estimated and written in the form a × 10^b, where a = 2 and b = based on the estimates, the mass of a dust particle is approximately blank times larger than the mass of a grain of pollen.