The first class had a kids in it, the second had b kids in it, and the third class had c kids in it. Kids from all three classes were
equally divided between two buses. How many kids were on
each bus? Btw its not (a+b+c)/2 i already tried that

Try abc ÷ 2

Step-by-step explanation:

F Class = a

S Class = b

T Class = c

a + b + c = abc

Two buses = 2

abc ÷ 2

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