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Evaluate Multi-Variable Expressions>
Evaluate Multi-Variable ExpressionsEvaluate Multi-Variable Expressions
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Question 1 of 5
1. Question
Evaluate `3a-b` using the following values:`a=5``b=3``c=2`- (12)
Hint
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Fantastic!
Incorrect
Order of Operations (PEMDAS)
P`=`Parentheses
E`=`Exponents
M/D`=`Multiplication/Division
A/S`=`Addition/SubtractionSimply substitute the given value for the variable.`a` `=` `5` `b` `=` `3` `c` `=` `2` `3``a` `-``b` `=` `(3xx``5``)-``3` `=` `15-3` `3xx5=15` `=` `12` `12` -
Question 2 of 5
2. Question
Evaluate `a^2-c` using the following values:`a=5``b=3``c=2`- (23)
Hint
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Keep Going!
Incorrect
Order of Operations (PEMDAS)
P`=`Parentheses
E`=`Exponents
M/D`=`Multiplication/Division
A/S`=`Addition/SubtractionSimply substitute the given value for the variable.`a` `=` `5` `b` `=` `3` `c` `=` `2` $$\color{#9a00c7}{a}^2-\color{#e65021}{c}$$ `=` $$\color{#9a00c7}{5}^2-\color{#e65021}{2}$$ `=` `25-2` `5^2=5xx5=25` `=` `23` `23` -
Question 3 of 5
3. Question
Evaluate `abc^2` using the following values:`a=5``b=3``c=2`- (60)
Hint
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Correct!
Incorrect
Order of Operations (PEMDAS)
P`=`Parentheses
E`=`Exponents
M/D`=`Multiplication/Division
A/S`=`Addition/SubtractionSimply substitute the given value for the variable.`a` `=` `5` `b` `=` `3` `c` `=` `2` $$\color{#9a00c7}{a}\color{#00880A}{b}\color{#e65021}{c}^2$$ `=` $$\color{#9a00c7}{5}\times\color{#00880A}{3}\times\color{#e65021}{2}^2$$ `=` `5xx3xx4` `2^2=2xx2=4` `=` `15xx4` `5xx3=15` `=` `60` `60` -
Question 4 of 5
4. Question
Evaluate `c(a-1)^2` using the following values:`a=5``b=3``c=2`- (32)
Hint
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Great Work!
Incorrect
Order of Operations (PEMDAS)
P`=`Parentheses
E`=`Exponents
M/D`=`Multiplication/Division
A/S`=`Addition/SubtractionSimply substitute the given value for the variable.`a` `=` `5` `b` `=` `3` `c` `=` `2` `c``(``a` `-1)^2` `=` `2``(``5``-1)^2` `=` `2(4)^2` `5-1=4` `=` `2 xx 16` `4^2=4xx4=16` `=` `32` `32` -
Question 5 of 5
5. Question
Evaluate `2a+bc^2-4c` using the following values:`a=5``b=3``c=2`- (14)
Hint
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Well Done!
Incorrect
Order of Operations (PEMDAS)
P`=`Parentheses
E`=`Exponents
M/D`=`Multiplication/Division
A/S`=`Addition/SubtractionSimply substitute the given value for the variable.`a` `=` `5` `b` `=` `3` `c` `=` `2` $$2\color{#9a00c7}{a}+\color{#00880A}{b}\color{#e65021}{c}^2-4\color{#e65021}{c}$$ `=` $$2(\color{#9a00c7}{5})+(\color{#00880A}{3})(\color{#e65021}{2})^2-4(\color{#e65021}{2})$$ `=` `10+(3xx4)-8` `2^2=2xx2=4` `=` `10+12-8` `3xx4=12` `=` `22-8` `=` `14` `14`
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