Answer:
4.) Cost of cordless phone = $55
cost of each additional handset = $25
Therefore, the overall cost of the cordless phone, including the 3 extra handsets is:
$55 + 3($25) = $55 + $75 = $130
5.) Given the function, f(<em>d </em>) = .20<em>d</em> + 14, where:
f(d) = global temperature (in Celsius)
d = number of decades
To evaluate the value of <em>f </em>(<em>d </em>) at f(10), you'll have to substitute the value of <em>d </em>= 10 as <u>input</u> into the function:
f(10) = .20(10) + 14
f(10) = 2 + 14
f(10) = 16
6.) Value of f(10):
<em>In 10 decades, the predicted global temperature will be </em><em><u>16°</u></em><em> Celsius.</em>
7.) The correct answer is B. The global temperature f(d) depends on the number of decades, <em>d</em>.
<u>Explanation</u>: the independent variable is <em>d </em>→ it is the <u>input</u> of the function. The output primarily depends on the given value of input.
8.) Given the function, f(<em>t </em>) = 0.2<em>t</em>
where<em> t </em>= represents number of days elapsed since the planting of the seed.
Evaluate f(40):
f(40) = 0.2(40)
f(40) = 8
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Context of f(40): The value of the function, f(40) = 8 represents the 8 centimeter height of the habanero plant after 40 days of planting its seeds.
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