Mathematics, 20.11.2020 21:50, ciarrap552

What is the range of f(x) = x^2 + 2, when the domain is all real numbers? A: All real numbers
B: All real numbers greater than 0
C: All real numbers greater than or equal to 2
D: All real numbers greater than 2

Answers: 1

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answered: Guest

(d)

step-by-step explanation:

given: the line in the graph passes through points (5,30) and (6,26).

then, the equation of line is:

$y-y_{1}=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}(x-x_{1})$

$y-30=\frac{26-30}{6-5}(x-5)$

$y-30=-4(x-5)$

$y-30=-4x+20$

$y=-4x+50$

now, put y=a(n) and x=n,

$a(n)=-4n+50$

$a(n)=-4n+46+4$

$a(n)=46-(n-1){\times}4$

hence, option d is correct.

Ascientist cools some water at a constant rate. the graph and table show how the temperature of the

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What is the range of f(x) = x^2 + 2, when the domain is all real numbers? A: All real numbers