how is the standard form, intercept form, and vertex useful when writing a parabola. (how is each form useful )

The intercept form gives the x-intercepts, y-intercepts, and concavity of the parabola. Vertex form is most useful when graphing, since finding the vertex is much easier. Finally, standard form helps you find concavity and each a, b, and c terms tell different things about the postition of the parabola. Generally, this form is factored into one of the other forms. Hope this helped!

answer: -2+√x,-2-√x

i hope this , i don't know if you're looking for a pair or not.

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