A question on a math test asked students to "Simplify the expression 7 - 3k + 9k - 23".
Kate answered "2(3k -8)". Is she correct or incorrect? Explain. If incorrect, give the correct
answer.

believe it or not anna is correct good job anna give me a fist bump there u go gal

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