Determine the interval(s) on which the given function is decreasing. Polynomial going down from the left and going to a local minimum the point negative 1 comma 4 and then going up to a local maximum at the point 0 comma 5 and then going down to the right through the point 1 comma 0

do i do it on a graph?

step-by-step explanation:

i found two solutions,   n = 2 • ± √3 = ± 3.4641

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there is no grid

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total amount to be paid = $19.5

step-by-step explanation:

given ,

original price = $25.99

discount = 25%

discount amount = 25% of original price

discount amount = 25/100   * 25.99

discount amount = $6.49

hence , the total amount to be paid = original price - discount amount

                                                            = $25.99 - $6.49

                                                            =$19.5

total amount to be paid = $19.5