Which function has a range of fyly s 5}?
O f(x) = (x – 4)2 + 5
O f(x)=(x - 4)2 + 5
O f(x) = (x - 5)2 + 4
O f(x) = -(x - 5)2 + 4

{xlx = -6, -1, 0, 3}

fyly=-7, 62, 1,9}

{x|x = -7, -6, -2, -1, 0, 1, 3, 9}

{yl y = -7, -6, -2, -1, 0, 1, 3, 9

Step-by-step explanation:

77

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