Is the expression (3x) · x + 4 linear?

no

Step-by-step explanation:

the (3x)(x) will simplify to 3x^2, and when the leading coefficient (the coefficient with the largest exponent) has an exponent of 2 or greater, then it is not linear, as a linear expression must have a leading coefficient with an exponent of 1.

r(0,90)(x,y) . t(-5,0)

last option

step-by-step explanation:

∆def to ∆d"e"f"

- rotate 90 counterclockwise degrees

- then translated 5 to the left (x --> x - 5)

answer is the last option