<span>A.He can rerandomize the results by separating the two groups randomly, then calculate the means and the difference of the means. </span>
15 * 25 = 375 <=== simple multiplication
40 + 1.2 + .25 = 41.45
30 + 1.4 + .045 = 31.445
41.450 - 31.445 = 10.005
or one ten 5 thousandths
I don't know if this is correct but I would write it like this: f(x) = 2(69 + 6)(x)