Ned wants to wallpaper the wall of his bedroom that has the door. the walls is 14 feet wide and 9 feet high. the door is 3 feet wide and 7 feet high. how many square feet of wallpaper will ned need for the wall?

answer: 270

step-by-step explanation:

you have to times 200 by 1.35 to get your answer

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

replication and blocking

step-by-step explanation:

the answer would be  

a.

3: 1

step-by-step explanation: