Which expression is equivalent to x2 - 9?
a (x – 3)
b (x – 3)(x– 3)
c (x − 3)(x + 3)
b (x + 3)(x + 3)

C. (x-3)(x+3)

Step-by-step explanation: Since both terms are perfect squares, factor using the difference of squares formula a^2-b^2=(a+b)(a-b) where a=x and  b=3.

Hope this helps you out! ☺

C

Step-by-step explanation:

x*x= x^2

-3*(+3)=-9

2x-9

a) t'(-3, 6) and v'(0, 3)  

step-by-step explanation:

option 2 is correct.

step-by-step explanation:

we are given two inequality equation

x+y> 5 and -3x+2y< -2

first we draw the graph of both function using t-table method

equation: x+y> 5

for x=0, y=5

for x=-5, y=0

table:

x   :   0     5

y   :   5     0

test point (0,0) , 0> 5

false

equation: -3x+2y< -2

for x=0, y=-1

for x=2, y=4

table:

x   :   0     2

y   : -1       4

test point (0,0) , 0< -2

true

now we draw the graph. see the attachment for graph.

common region would be solution set.

option 2 is correct.