V + 3 = -V + 25

a. -9
b. 9
c. 11
d. -11​

c.11 is coorrect

Step-by-step explanation:

V+3=-V+25

shift same type of variables on one side

V+V=25-3

2V=22

V=22/2

V=11

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

a reflection across the x axis and a 90 degree rotation left and right.