Please help me i am having a issue in algebra

C: f(x)=7+5x

Step-by-step explanation:

start replacing 1 in each function and see which one matches:

A gives f(1)=5 so no

B gives f(1)=10, so no

C gives f(1)=12, good

D gives f(1)=17, no again

if you want you can replace the rest of the value to double check, but at least one correct is enough

18

step-by-step explanation:

draw the shape and you will see that f and k are actually at adjacent vertices (points of the hexagon that are neighboring).   so find the distance between (1,2) and (4,2).   that is easy since (1,2) and (4,2) is just a vertical distance to count, which is 3.   it is a regular polygon which means all sides are congruent.   you have 6 sides (hexa) so multiply 6 by 3 to receive 18.

trapezoid

step-by-step explanation:

first i plotted all my points on a grid graph

i made sure all of them were in the correct quadrant

then i saw it was a trapezoid or a quadrilateral