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McGraw Hill Glencoe Algebra 2, 2012 View details

1. Expressions and Formulas

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Exercise 5 Page 7

Substitute - 2 for a, 3 for b, and 4.2 for c.

11.6

Practice makes perfect

To evaluate the given expression for a = -2, b = 3, and c= 4.2, we should substitute these values into the expression and simplify as much as possible.

4(2a+3b)-2c

SubstituteValues

Substitute values

4(2( -2)+3( 3))-2( 4.2)

Multiply

4(-4+9)-8.4

AddTerms

Add terms

4(5)-8.4

Multiply

20-8.4

SubTerms