Which relation is a function? {(0, 1), (0, 2), (1, 2), (1, 3)}

{(–4, –6), (–3, –2), (1, –2), (1, 0)}

{(8, 1), (4, 1), (0, 1), (–15, 1)}

{(–2, –12), (–2, 0), (–2, 4), (–2, 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

c.

step-by-step explanation:

i'm assuming that it's c.)   volcanoes built the mountains and earthquakes tore them down.

plz mark brainliest i took the test