Solve the question and show your work what property is illustrated by 21x1 = 21 is it a. zero property or b. distributive property or c. property of one

Simplify the expression 10/11(22z) + (a+5) -1

Bring the fraction a/a-4 to a denominator of 16-a^2

The input to the function is x and the output is y. write the function such that x can be a vector (use element-by-element operations). a) use the function to calculate y(-1.5) and y(5). b) use the function to make a plot of the function y(x) for -2 ≤ x ≤ 6.