Please help me with this. All you have to do is tell me if I'm right
2 answers:
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Answer:
Step-by-step explanation:
Let
x -----> the cost of the items Kira's store sold
Remember that
----> sales tax in decimal number
we know that
The cost of the items that Kira's store sold multiplied by the sales tax in decimal number must be equal to $22
so
Solve for x
Divide by 0.05 both sides
Answer:
C
Step-by-step explanation:
The exponential function has standard form
y = a
Use the 2 given points to find a and b
Using (3, 182.25) , then
182.25 = a b³ → (1)
Using (2, 202.5) , then
202.5 = ab² → (2)
Divide (1) by (2)
=
b = 0.9
Substitute b = 0.9 into (1) and solve for a
182.25 = a (0.9)³ ( divide both sides by (0.9)³
a = = 250
Thus
f(x) = 250 × ← third option