Use the binomial theorem to expand (4-2z)^3

(

t

+

w

)

4

=

t

4

+

4

t

3

w

1

+

6

t

2

w

2

+

4

t

1

w

3

+

w

4

Explanation:

First, you should get to know Pascal's triangle. Here's a small portion of it up to 6 lines. Basically you're just adding the numbers that are beside each other, then writing the sum below them. (For example,  

1

+

2

in the third line equals to  

3

in the fourth line.) If you want a better explanation for that, feel free to do some more research on it.

the answer is 5/3x+7/5y+7

(d)

step-by-step explanation:

given: the line in the graph passes through points (5,30) and (6,26).

then, the equation of line is:

now, put y=a(n) and x=n,

hence, option d is correct.