How do you find the measures of these angles ? ? (using the picture on the right)

opposite angles equal each other so if angle 2 is 97, then angle 3 is also 97

 6 & 5 need to equal 180 so if 6 = 83, then 5 = 180-83 = 97

 Angle 10 = angle 2 = 97

angle 7 = angle 6 = 83

 angle 9 = angle 6  = 83

angle 16 = angle 5 = 97

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