Consider the function f(x) = 5x + 7. which statement must be true? a) f(1) ? f(3) = f(3) ? f(1) b) f(1) ? f(3) = f(5) ? f(3) c) f(1) ? f(3) = f(3) ? f(5) d) f(1) ? f(3) = f(? 1) ? f(? 3)

Option C is correct

Step-by-step explanation:

Consider the function:

At x = 1

⇒f(1) = 12

At x = 3

⇒f(3) = 22

At x = 5

⇒f(5) = 32

At x = -1

⇒f(-1) = 2

At x = -3

⇒f(-3) = -8

A.

⇒

⇒

Option A is incorrect.

B.

⇒

⇒

Option B is incorrect.

C.

⇒

⇒

Option C is Correct.

D.

⇒

⇒

Option D is incorrect.

50 min

step-by-step explanation:

they will be decreasing both their times in half

60 / 2 = 30

40/2 = 20

30 + 20 = 50

the required function is .

step-by-step explanation:

from the given table it is noticed that the graph passing through (-3,7), (0,4), (3,1) and (8,-4).

it is a linear function because the value of y is decrease by one as the value of x increase by 1.

the slope of the function is

the slope of the function is -1 and the y-intercept is 4.

the slope intercept form is

where, m is slope and b is y-intercept.

therefore the required function is . the graph of this function is shown below.