Geometry math question no guessing and show work you

SM=2RN

2(3x-4)=9x-20

distributing 2 over 3x-4

6x-8 =9x-20

9x-6x=20-8

3x=12

divide both sides by 3

x=4

Answer is option C . x=4

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

n=9

step-by-step explanation:

7 times a number = 7n

decreased by 13 = 7n-13

same as is =

5 times the number = 5n

increased by 5 = 5n+5

7n-13 = 5n+5

2n=18

n=9