The Chewy Candy Company is test marketing a new candy bar in Seoul and Manila. In Seoul, the company sold 40 candy bars the firs
t month, and each month the cumulative total number of candy bars sold increases by 60. In Manila, the company sold 20 candy bars the first month, and the cumulative total number of candy bars sold increases by approximately 80 percent each month. In which month will the cumulative total number of candy bars sold in Manila first exceed the cumulative total in Seoul?
1 answer:
Looking at the image attached, we can see the assumed sales of the Chewy Candy Company for its new candy bar in Manila and Seoul. Setting up the given condition for separate branches, we clearly see that during the 6th month, the total sales in Manila first exceeded the cumulative total sales in Seoul.
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The equation is
The incorrect solution steps are given.
To find:
The first error.
Solution:
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Using distributive property, we get
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Therefore, there is first error in step 1 because the distribution property is not used properly.
Hence, the correct option is D.
Answer:
see explanation
Step-by-step explanation:
To solve these equations equate them to zero, that is
x² - x - 42 = 0
Consider the factors of the constant term (- 42) which sum to give the coefficient of the x- term (- 1)
The factors are - 7 and + 6, since
- 7 × 6 = - 42 and - 7 + 6 = - 1 , thus
(x - 7)(x + 6) = 0
Equate each factor to zero and solve for x
x - 7 = 0 ⇒ x = 7
x + 6 = 0 ⇒ x = - 6
Solutions are x = - 6, x = 7
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(x + 3)(x - 2) = 0 ← in factored form
Equate each factor to zero and solve for x
x + 3 = 0 ⇒ x = - 3
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x = ± = ± 5
Solutions are x = - 5, x = 5