Answer:
<h2>3x²</h2>
Step-by-step explanation:
![3x^4=\boxed{3}\cdot\boxed{x}\cdot\boxed{x}\cdot x\cdot x\\\\15x^3=\boxed{3}\cdot5\cdot\boxed{x}\cdot\boxed{x}\cdot x\\\\21x^2=\boxed{3}\cdot7\cdot\boxed{x}\cdot\boxed{x}\\\\GCF\bigg(3x^4,\ 15x^3,\ 21x^2\bigg)=\boxed3\cdot\boxed{x}\cdot\boxed{x}=3x^2](https://tex.z-dn.net/?f=3x%5E4%3D%5Cboxed%7B3%7D%5Ccdot%5Cboxed%7Bx%7D%5Ccdot%5Cboxed%7Bx%7D%5Ccdot%20x%5Ccdot%20x%5C%5C%5C%5C15x%5E3%3D%5Cboxed%7B3%7D%5Ccdot5%5Ccdot%5Cboxed%7Bx%7D%5Ccdot%5Cboxed%7Bx%7D%5Ccdot%20x%5C%5C%5C%5C21x%5E2%3D%5Cboxed%7B3%7D%5Ccdot7%5Ccdot%5Cboxed%7Bx%7D%5Ccdot%5Cboxed%7Bx%7D%5C%5C%5C%5CGCF%5Cbigg%283x%5E4%2C%5C%2015x%5E3%2C%5C%2021x%5E2%5Cbigg%29%3D%5Cboxed3%5Ccdot%5Cboxed%7Bx%7D%5Ccdot%5Cboxed%7Bx%7D%3D3x%5E2)
Multiply by the reciprocal of the coefficient of S.
S = 360A/(π·r²)
expendiure=number of laptops times cost
per laptop
expenditure=12 times $26
expenditure=$312
total
expenditure is $312
Answer:
A. $40
Step-by-step explanation:
30 x 40= 1,200
1,200 x 26= 31,200