<span>6. 9 + 11y – y2 + y3 – 4y4 This expression has 5 terms.
7. </span><span>(2a + 3b) + 4c = 2a + (3b + 4c) Associative property of addition, because you're moving the parentheses. </span><span> 8. </span><span>If m = 4 and n = 4, then m = n Substitution property.
The probability of drawing a red marble on the first attempt is
After the first marble is drawn, and we know it to be red, we're drawing the next marble from a pool with one less marble than before (i.e. conditioning on the event ). So
