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Help I'll give brainiest.

A fabric store is having a 25% off sale, Luisa has a gift card for $10 off her total purchase. The function f(x) = 0.75x - 10 represents the final cost of an x-dollar item after the discount and gift card are applied. Complete the table to determine the missing original prices and final cost of items A, B, C. D.

A $20 $???

B $??? $14

C $60 $???

D $??? $59

Respuesta :

Answer:

See missing answers bold

$20 original = $5 final paid           as $15 was s/p before -10 was added

$30 original = $14 final price        as $24 was s/p before -10 was added

$60 original = $35  final price    as $45 was s/p before -10 was added

$92 original  = $69 final price       as $59  was s/p before -10 was added  

Step-by-step explanation:

Ans in bold  

A) = f(x) = 20(0.75) -10 =  15 - 10  = $5                 = £5 final paid

B)= f(x)  30 (0.75) = 24 - 10 = 14                           = $30 original price

C)  = f(x) = 60(0.75) -10 = 45 -10 = $35               = $35 final price

D)     = f(x) = 92 (75) = 69 -10 = $59                    = $92 original price

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