What is the value of the function f(x) = 3(4 − x) when x = 7? 33 9 –9 –21

The answer is -9

Step-by-step explanation:

f(x) = 3(4 − x) when x = 7

f(7) = 3(4 – 7)

f(7) = 3(-3)

f(7) = -9

Thus, The answer is (-9)

-TheUnknownScientist 72

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,