Polly's veterinarian told her a dog that weighs w kilograms needs 30w + 70 calories each day to stay healthy. Polly's dog, Otis, weighs 22 kilograms. How many calories does Otis need each day to stay healthy? Write your answer as a whole number or decimal. ____ calories

Substitute value into formula: First, we need to substitute the value of w, which is 22, into the formula 30w + 70 to find out how many calories Otis needs. Perform multiplication: Now, let's do the multiplication: 30 times 22 equals 660. Add to find total calories: Next, we add 70 to 660 to get the total calories needed.

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Polly's veterinarian told her a dog that weighs $w$ kilograms needs $30w + 70$ calories each day to stay healthy. Polly's dog, Otis, weighs $22$ kilograms. $\newline$ How many calories does Otis need each day to stay healthy? $\newline$ Write your answer as a whole number or decimal. $\newline$ $\newline$ ____ calories $\newline$

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Grade 6

Evaluate variable expressions: word problems

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Q. Polly's veterinarian told her a dog that weighs

w

kilograms needs

30w + 70

calories each day to stay healthy. Polly's dog, Otis, weighs

22

kilograms.

\newline

How many calories does Otis need each day to stay healthy?

\newline

Write your answer as a whole number or decimal.

\newline

\newline

____ calories

\newline

Substitute value into formula: First, we need to substitute the value of $w$ , which is $22$ , into the formula $30w + 70$ to find out how many calories Otis needs.
Perform multiplication: Now, let's do the multiplication: $30$ times $22$ equals $660$ .
Add to find total calories: Next, we add $70$ to $660$ to get the total calories needed.