If you want to multiply (2*x + 5) and (2*x - 5), you can do this using the following steps:
(2*x + 5) * (2*x - 5) = 4*x^2 - 10*x + 10*x - 25 = 4*x^2 - 25
The correct result is 4*x^2 - 25.
The amount, in oz of butterscotch chips needed by proportional reasoning is; 75oz.
<h3>What is the amount of butterscotch chips needed by proportional reasoning?</h3>
It follows from the task content that the the amount of butterscotch chips needed can be determined by means of the proportion premise declared in which case;
- The recipe requires 3 times as many chocolate chips as butterscotch chips.
Hence, when 25oz of chocolate chips is used, the amount of butterscotch needed is 3 times 25 and hence, = 3 × 25 = 75oz.
Read more on proportion;
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The unit price is $6.25 because $43.75 divided by 7 is $6.25