Correct option is  B)
Cross-multiplication is helpful in Solving proportions.
<h3>What is Solving Proportions?</h3>
Solving proportions is simply a matter of stating the ratios as fractions, setting the two fractions equal to each other, cross-multiplying and solving the resulting equation.
<h3>What are the 2 methods for solving proportions?</h3>
Method I: Draw a double-sided number line, label the parts, set up a proportion and solve.
 Method II: Using any method, calculate unit rate and then calculate how many pounds you can get for $30. Method III: Graph a point to represent the original ratio.
<h3>
What is the rule for solving proportions?</h3>
 The product of the means is equal to the product of the extremes.
Learn more about  solving proportions here: brainly.com/question/14752332
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I understand the the question you are looking for is :
Cross-multiplication is helpful in:
 a. quadratic equations
 b. solving proportions
 c. linear equations
 d. word problems
 please select the best answer from the choices provided a b c d
 
        
             
        
        
        
Answer:
rational. BRAINLIEST??
Step-by-step explanation:
 
        
                    
             
        
        
        

so since its just two factors, you can pick either for the "B" or "h", or one can say that the trinomial is the "B", because it can be factored into a couple more binomials, either way will work.