Im guessing c because that seems to make sence.
Answer:
do this ok this is step by step answer
Answer:
50 cards
Step-by-step explanation:
We can start by saying that his total card collection has x cards in it, meaning that 28% or 28/100 of his total cards, x, is equal to 14. Next, we can divide by 28/100 on both sides, and dividing is the same as multiplying by the reciprocal. The reciprocal of 28/100 is 100/28, so 14 * 100/28 is equal to 100/2, which is 50. We can say that 50 cards were in his card collection initially.

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Explanation:</h2>
A Perfect-Square Trinomials are quadratics that result after squaring binomials. So these Perfect-square trinomials are given in the form:

Whose Squared-Binomial Form is:

In this exercise, we have the variable
, so changing
it is true that:

Therefore, for our given expression we have:

So our goal is to complete this expression:
Step 1. First of all, we need to square our variable w. therefore:

Step 2. Here 
Step 3. Let's find b:

Finally, our complete expression is:

<h2>Learn more:</h2>
Factors of polynomials: brainly.com/question/1554148
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