Smog Lab Report Instructions: In this lab activity, you will examine the sources and impacts of air pollution. You will run several trials during the lab. Each trial will examine the impact of a different independent variable. Make sure to develop a hypothesis before observing each trial. Once the trial is complete, compare your hypothesis to the actual results. Use this lab report to collect data and analyze your results. Submit your lab report to your instructor when completed.

its the fourth option

the simplified form is

step-by-step explanation:

we want to simplify the expression,

let us change the middle bar to a normal division sign to obtain,

we multiply the first fraction by the reciprocal of the second fraction to obtain,

we factor to obtain,

we cancel the common factors to get,

we simplify to get,

the correct answer is b

i believe it is 0.1m because the measurement of 30.4m limits how precise you can be

you can only be as precise as the least precise measurement