Brainiest for right answer!

c.)

Step-by-step explanation:

=(4c+−3d)(3c+d)

=(4c)(3c)+(4c)(d)+(−3d)(3c)+(−3d)(d)

=12c2+4cd−9cd−3d2

=12c^2−5cd−3d^2

C

Step-by-step explanation:

(4c-3d)(3c+d)

= 12c^2+4cd-9cd-3d^2

=12c^2-5cd-3d^2

answer: x=60

sample answer: you can determine whether each element of the domain is paired with exactly one element of the range. for example, if given a graph, you could use the vertical line test; if a vertical line intersects the graph more than once, then the relation that the graph represents is not a function.