Answer:
49π
Step-by-step explanation:
πr^2
π*7^2
49π
Total 7*10^5 trees were planted.
Further explanation:
The product of both quantities will give us the total number of trees planted by the students for the community project.
So,
Given

So, total 7*10^5 trees were planted.
Keywords: Product, exponents
Learn more about product and exponents at:
#LearnwithBrainly
Answer:
-12x^2+46x-6
Step-by-step explanation:
combine like tens and subtract then from eachother
It will be a negative.
for an example: -20 for x would mqke 2x + 1 into -39 and 8x + 5 into -155. that's 116 apart, so maybe -2(8) + 5 = -11
-2(2) + 1 = -3
but that's only 8 apart, so it'd be higher.
-4(2) + 1 = -7
-4(8) + 5 = -27
BOOM
Tadaaaa,
You probably thought positive, but sometimes it's negative, you know what I mean?
The explanatory variable is the amount of exposure the student is given to classical music.