Why does the equation 7x + 13x - 5 - 15 = -10 - 10 + 14x + 6x have an infinite number of solutions? because if you add 20x to both sides of the equation and simplify, you get - 20 = -20
A
B
because if you add 20x to both sides of the equation and simplify, you get —20 = 0
С
because if you subtract 20x from both sides of the equation and simplify, you get — 20 = –20
D
because if you subtract 20x from both sides of the equation and simplify, you get -20 = 0

Unaware that 35% of the 10000 voters in his constituency support him, a politician decides to estimate his political strength. a sample of 200 voters shows that 40% support him. a. what is the population? b. what is the parameter of interest? state its value c. what is the statistics of the interest? state its value d. compare your answers in (b) and (c) is it surprising they are different? if the politician were to sample another 200 voters, which of the two numbers would most likely change? explain