The number of 3¢ stamps that are in the collection is: 22.
<h3>What is an expression?</h3>
An expression can be defined as a mathematical equation which is used to show the relationship existing between two or more variables and numerical quantities.
In this exercise, you're required to determine the number of 3 cents (3¢) . Therefore, we would translate the word problem into an algebraic expression and then evaluate it as follows:
<u>Note:</u> 100 cents (¢) is equal to 1 dollar ($).
A collection of stamps consists of 3¢ stamps, 5¢ stamps and 7¢ stamps; 3¢ + 5¢ + 7¢ = 194
6 more 3¢ stamps than 5¢ stamps; 3¢ = 5¢ + 6 ⇒ 5¢ = 3¢ - 6
Two more 7¢ stamps than 3¢ stamps; 7¢ = 3¢ + 2
Combining the above equations, we have:
3¢ + 3¢ - 6 + 3¢ + 2 = 194
9¢ = 198
¢ = 198/9
¢ = 22.
Read more on expressions here: brainly.com/question/17361494
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<u>Complete Question:</u>
A collection of stamps consists of 3¢ stamps 5¢ stamps and 7¢ stamps. There are 6 more 3¢ stamps than 5¢ stamps and two more 7¢ stamps than 3¢ stamps. The total value of the stamps is $1.94. How many 3¢ stamps are in the collection?
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. (See definition of derivative)