BRAINLIEST HERE Look at the stem-and-leaf plot. What is the mean of the numbers?

A) 1.57

B) 19

C) 20

D) 22

4+6x-3x^3 in standard form with explanations because i don’t understand

Find the equation of the line with slope =8 and passing through (6,53) write your equation in the form y=mx+b

1- is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis. 2- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis. 3- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in part b?