a desk originally priced at $276 is on sale for 20% off. If sales tax is 7%, how much will the desk cost on sale, including tax?
1 answer:
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Answer:
<u>7</u>
Step-by-step explanation:
The sides are in proportion.
- 35/? = 20/4
- 35/? = 5
- ? = 35/5
- ? = <u>7</u>
Answer:
Domain: (-infinity, +infinity) since you can pick any x values.
Range: [0, +infinity) since it does not go below the x axis.
Step-by-step explanation:
The graph is a parabola given by
lets pick a few x values:
x = 1 gives us y = 1^2, which = 1
x = -1 gives us y = (-1)^2, which = 1
The parabola's domain is any x value as it extends to infinity.
For its range, you can see that it does not go below the x axis at x = 0. Therefore, the range of the parabola is from [0, infinity]