The sketch below shows part of the graph of y= ab^x where a and b are constants Work out the values of a, b and k. Coordinates are (0,8),(1,18)(1.5,k)

good luck on your studies! : )

david edward.

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

plz mark brainliest i took the test

2, 2, 2 or -4, 20, 29

step-by-step explanation:

there is two ways you can do it.