Which expression is equivalent to x + y + x + y + 3(y + 5)?
a.
2x + 5y + 5
b.
2x + y + 30
c.
2x + 5y + 15
d.
2x + 3y + 10

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so

step-by-step explanation:

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hello from mrbilldoesmath!

answer:   x^2 + y^2 = 1024

discussion:

the equation of a circle with center (h,k) and radius "r" is

(x-h)^2 + (y-k)^2 = r^2.

in our case

(x-0)^2 + (y-0) ^2 = 32^2 = 1024

you,

mrb

5 feet of chain cost $9

so the answer is 1.80