Evaluate the expression for x = 3, y=13 , and z = 5. 12x−3y4x−z Ill give brainliest if you get it correct!
10 points and a brainliest

-437

Step-by-step explanation:

Substitute the knowns into 12x−3y4x−z

12x = 12*3 = 36

3y = 3*13 = 39

4x=4*3 = 12

z=5 = 5

So, 36-(39*12)-5 = -437

the solution of the equation is 2.23 ⇒ answer b

step-by-step explanation:

* lets revise the meaning of exponential function

- the form of the exponential function is y = ab^x, where a ≠ 0, b > 0 ,  

  b ≠ 1, and x is any real number

- it has a constant base b

- it has a variable exponent x

- to solve an exponential equation, take the log or ln of both sides,  

  and solve for the variable

* lets solve the problem

∵

- the base is 7 and the exponent is x

- insert ㏑ in both sides

∴

- use the rule

∴ x ㏑(7) = ㏑(77)

- to find x divide both sides by ㏑(7)

∴

* the solution of the equation is 2.23 to the nearest 2 decimal places

not me

step-by-step explanation:

i wish i did i would like to get a desert ghost ball python