McGraw Hill Glencoe Algebra 2, 2012
MH
McGraw Hill Glencoe Algebra 2, 2012 View details
Mid-Chapter Quiz
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Exercise 4 Page 91

Substitute 2y for each value of x.

24y^3-4y+7

Practice makes perfect

Using the function f(x), we want to evaluate for the given value, f( 2y). To do this, we need to substitute 2y for x in each instance of the x-variable. Let's take care of the substitution.

f(x)=3x^3-2x+7
f( 2y)=3( 2y)^3-2( 2y)+7
f(2y)=3(2)^3(y)^3-2(2y)+7
f(2y)=3(8)(y^3)-2(2y)+7
f(2y)=24y^3-4y+7