Plz help!!

What is the value of x when f(x)=20? What does this mean in context?

It means that x = 20

Step-by-step explanation:

70

step-by-step explanation:

2*5=10

4*15=60

60+10=

70

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