evaluate the expression 1. 20-2x; x=3  2. 3y-5; y=5 3. 2+3a^2 a=-3    on number 3 the 2 is supposed to be an exponent

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter1: Variables, Expressions, And Integers
Section1.1: Expressions And Variables
Problem 5E
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evaluate the expression

1. 20-2x; x=3 

2. 3y-5; y=5

3. 2+3a^2 a=-3 

 

on number 3 the 2 is supposed to be an exponent 

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