Which function has a vertex at the origin?
EOF
Of(x) = (x + 4)2
Of(x) = x(x - 4)
f(x) = (x – 4)(x + 4)
O f(x) = x²

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i am unable to solve this problem

step-by-step explanation:

the answer is b: 18

step-by-step explanation:

use the pythagorean theorem to .

a^2+b^2=c^2

plug 18 for "r"

the 2 legs are 18 and 24

18^2+24^2=c^2

324+576=c^2

900=c^2

c=30

30-12=18

18 is the radius

: )

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