Math: what is the value of k? will upvote.

12k+6=4k–812k+6=4k–8

a . –4–4

b. –3–3

c. 3

d. 4

*let m∠cob = 50°30’, m∠aob = 70° and m∠aoc = 20°30’. could point c be in the interior of ∠aob? why? a. point c could be the interior of aob but it is not the only case b. point c is the interior of aob c. point c is not the interior of aob d. the given is not possible for the plane geometry answer

If rs 900 amounts to rs 1044 in 4 years, what sum will amount to 1368 in 3 1/2 years at the same rate

Qrst is a parallelogram. determine the measure of ∠q pls