Which pair of expressions is equivalent? A) a+a+a and a^3
B) 2b + 23 and 2b + 32
C) 30c + 18 and 3(10c+15)
D) 4(2d-5) and 8d-20

ASAP!

If sr is 4.5cm and tr is 3cm, what is the measure in degrees of angle s?

Apolygon is shown on the graph: a polygon is shown on the coordinate plane. vertices are located at 3 comma 5, 1 comma 3, 1 comma 1, 2 comma 0, 4 comma 0, 5 comma 1, and 5 comma 3. what effect will a translation 3 units down and 2 units left have on the polygon? be sure to address how it could impact the angles, side lengths, and congruency between the original pre-image and the image. xd i need

Multiply and simplify 2x^2 y^3 z^2 · 4xy^4 x^2