Hello,
-2<1 ==> f(x)=3x²-1 =>f(-2)=3*(-2)²-1=3*4-1=12-1=11
We would need to know how many students are in the class to properly answer the question.
Divide distance walked by time:
2 1/4 miles / 2/3 hours = 3 3/8 miles per hour
Here's the solution,
let the sides of cube be a
now, we know
<em><u>Surface area </u></em>=

So,
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Each side of <em><u>cube</u></em> measures 2.5 cm
<em><u>volume</u></em> :
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