What is the price for an mp3 player that costs $29.99 has a 20% discount and a 6.8% tax

The price of the MP3 player after adding discount and tax on the market price is $ 22.35

Step-by-step explanation:

The Market price of MP3 player = m. p = $ 29.99

The discount percentage on the player = 20 %

The tax added to cost price = 6.8 %

Let The selling price of player = s.p

Now, From discounted method

Discount % = × 100

or, 20 = × 100

or,   =  

or, = 1 -

or, = 1 -

Or, =

or, =

∴ s.p =   × 29.99

or, s.p = 23.99

So, selling price = s.p = $ 23.99

Now, Again tax added = 6.8 %

So, The price final price of the player after adding tax = $ 23.99 - 6.8 % ×23.99

Or, The price final price of the player after adding tax = $ 23.99 ( 1 - )

Or,  The price final price of the player after adding tax = $ 23.99 × 0.932

Or,  The price final price of the player after adding tax = $ 22.35

Hence The price of the MP3 player after adding discount and tax on the market price is $ 22.35 Answer

x = ± 6i

step-by-step explanation:

x^2 = -36

take the square root of each side

sqrt(x^2) = sqrt(-36)

we know sqrt(ab) = sqrt(a) sqrt(b)

x = ±sqrt(36) sqrt(-1)

we know that sqrt (-1) = i

x = ± 6i