I need a bit help i don’t really get it

Value of is $15$ degrees and measure of a vertical angle is $105$°

Step-by-step explanation:

These are vertically opposite angles which are congruent and hence equal.

Thus,

Find the measure of a vertical angle by putting the value of $x$ as $15$

f is the midpoint of

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