Answer:
Replace
F
(
x
)
with
y
.
y
=
9
x
Interchange the variables.
x
=
9
y
Solve for
y
.
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y
=
x
9
Solve for
y
and replace with
F
−
1
(
x
)
.
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F
−
1
(
x
)
=
x
9
Step-by-step explanation:
Answer:
y = 3/2x + 20
Step-by-step explanation:
Use point-slope form. (long to explain, it is correct though).
Answer:
Option A and C is correct.
Step-by-step explanation:
Discount is defined as a reduced price on something being sold or at a price lower than that item is normally sold for.
For a 20% discount,
Given:
Initial prices = $ d
Discounted price = % discount × original/initial cost
= 20/100 × d
= 0.2 × d
Selling price = original cost - discounted price
= d - 0.2d
= 0.8 × d
= 0.8d
