One twentieth is 5%, so the total cost is
f(c) = 1.05 c
The domain is [80, 180]
For Albert to afford the shoes
That's the maximum so he can afford shoes with preshipping prices in the domain
[80, 140]
If you solve the inequality x + 6 ≥ 9, the solution set is x ≥ 3. Graph x ≥ 3 on a number line.
2 answers:
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