Yolanda is buying supplies for school. she buys n packages of pencils at $1.40 and m pads of paper at 1.20 each. what does each term in the expression 1.4n 1.2m represent? what does the entire expression represent?

The relative growth rate for a certain type of fungi is 60% per hour.a small culture has formed and in just 6 hours the count shows to be 20,273 fungi in the culture.what is the initial number of fungi in the culture?