Given x=-3, y=6, and z=-4 x+y+(-1)= Blank 1:

z = 17

Step-by-step explanation:

To solve this equation, solve for z since x and y are given

First substitute -3 for x and 6 for y in the equation z=-4 x+y+(-1)

z = -4(-3) + 6 - 1

Next multiply -4 and -3 making it 12 + 6 - 1 = z

After that add 6 and 12, which will make it 18 - 1 = z

Lastly subtract 1 from 18. This means z equals 17

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