Find the 4th term of the expansion of (2a-b)^7

-560a^4b^3 .

Step-by-step explanation:

For a binomial expansion :

(r + 1)th term of (a + b)^n = nCr a^(n-r) b^r.

So the 4th term of (2a - b)^7

= (3 + 1)th term = 7C3 (2a)^(7-3) (-b)^3

= 35 * 16a^4* -b^3

= -560a^4b^3  (answer).

step-by-step explanation:

once you graph it hit 2nd (the blue button) and graph

that takes you to a table of coordinates

on the left is x coordinates and on the right is y coordinates and an empty box

(you may have to scroll up/down in order to get ( x, 0)

stew reads at the fastest rate of 265 words per minute.

step-by-step explanation:

it's a given that felicia reads at 260 word per minute and on connie's graph we can see that she reads 200 words per minute. since stew's table tells us that he read 795 in 3 minutes, we can divide 795 by 3 to find out how many words he reads per minute.

795/3 = 265

stew reads 265 words per minute - he reads at the fastest rate since felecia reads at 260 words per minute and connie reads at 200 words per minute.

stew (265) > felecia (260) > connie (200)