HELP ME WITH THIS QUESTION PLEASE AND ILL GIVE SOMEBODY THE BRAINLIEST ANSWER I want to get an iwatch 3, the 38mm costs $169.00 at Walmart, and the 42 mm cost $199.00. The difference is found by using?

A. Multiplication
B. Division
C. Addition
D. Subtraction

What is the square root of 45? (step by step working plz)

The reflexive property of congruence lets you say that ∠pqr ≅

Astudent draws two parabolas on graph paper. both parabolas cross the x-axis at (–4, 0) and (6, 0). the y-intercept of the first parabola is (0, –12). the y-intercept of the second parabola is (0, –24). what is the positive difference between the a values for the two functions that describe the parabolas? write your answer as a decimal rounded to the nearest tenth