Please help
Which equation has infinitely many solutions?
A. -6.8 + 3y + 2.4 = 4.3 - 3y

B. 1/3y + 2.5 - 2/3y = 1.2

C. 5.1 + 2y + 1.2 = -2 + 2y + 8.3

D. 2/5y = 2.3 + 3/2 y

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step-by-step explanation:

what is

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

17

step-by-step explanation:

51/3=17

thus 17 is your answer.