A Texas teenager from Cedar Park holds the new world record for having the longest legs (female) and the longest teen legs. Her legs are 4 ft. and 5 inches long. How many inches long are her legs?
O 45 inches
O 53 inches
оо
48 inches
O 40 inches

53 inches

Step-by-step explanation:

4 feet is 48 inches and you put 5 inches into that its 53 so its 53 inches.

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