4. Ben & Joel are raising money for their class trip by selling chocolate bars. Ben ralsed $43.50 by selling 12 chocolate w/almond bars and 9 chocolate w/peanut butter bars. Joel raised $51.50 by selling 8 chocolate w/almond bars and 15 chocolate w/peanut butter bars. Find the cost of each type of chocolate bar.​

x = 3 ± √(5+y)

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

2

step-by-step explanation:

here's a poem i finished a while ago. i hope you like it and that it inspires you.