If (x + 1)(x - 3) = 5, then which of the following statements is true?

x + 1 = 0 or x - 3 = 0
x + 1 = 5 or x - 3 = 5
x - 4 = 0 or x + 2 = 0

or

Step-by-step explanation:

we have

Multiply

we know that

The formula to solve a quadratic equation of the form is equal to

in this problem we have

so

substitute in the formula

therefore

so

or

part a

in a city ice cream is mostly only bought when the temperature is very high as ice cream cools down our

so we can derive the conclusion that as the temperature increases the number of ice creams sold also increases

part b

y intercept is 5

slope is 2

happy to

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