The Sun and other stars are powered by nuclear fusion. Which of these statements correctly
describes one of the processes that occur during nuclear fusion in stars?
A Four hydrogen nuclei combine to become a helium nucleus, absorbing energy.
B. Four helium nuclei combine to become a hydrogen nucleus, releasing energy.
C Four hydrogen nuclei combine to become a helium nucleus, releasing energy.
D. Four helium nuclei combine to become a hydrogen nucleus, absorbing energy

17 1/3

step-by-step explanation:

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