Forty two and six thousandths into a decimal

Write a polynomial that fits the description: a third-degree polynomial with leading coefficient -4

State if the two triangles are congruent. if they are, state how you know?

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.