R(x)=−7x−3 and q(x)=r(−3x). What equation shows the correct rule for the function q?

q(x)=21x+3

q(x)=21x+9

q(x)=21x

q(x)=21x−3

Aline passes through the point (2, -4) and has a slope of 0, what is the equation of the line? plz fast

In the figure below, segment ac is congruent to segment ab: triangle abc with a segment joining vertex a to point d on side bc. side ab is congruent to side ac which statement is used to prove that angle abd is congruent to angle acd? segment ad bisects angle cab. triangle acd is similar to triangle abd. segment ad is congruent to segment ac. angle cab is congruent to angle cba.

(! ) three cylinders have a height of 8 cm. cylinder 1 has a radius of 1 cm. cylinder 2 has a radius of 2 cm. cylinder 3 has a radius of 3 cm. find the volume of each cylinder