2. A room is shaped like a trapezoid as shown.

(a) What is the area of the room? Use the formula . Show your work.

(b) Carpet costs $8.30 per square foot. How much will it cost to carpet the room? Show your work.

(c) Furniture covers 25% of the floor. How many square feet of carpet are covered by furniture? Show your work.

(Score for Question 3: ___ of 10 points)

3. The stem-and-leaf plot shows the cost of lamps at a department store.

(a) What is the median cost?

(b) Is there a mode? If so, what is it?

(c) What is the difference between the most expensive and least expensive lamps?

(d) How many lamps cost more than $20 but less than $40?

(e) What is the ratio of lamps that cost less than $40 to lamps that cost more than $40? Write the ratio in simplest form.

since your problem is x^4 = 81, what you have to undeo is the "to the fourth power" part.

the inverse (opposite operation) of "to the fourth power" is "to the fourth root".

  (x^4) ^ ¼   = 81 ^ ¼  

  81 = 3^4     so (3 ^ 4) ^ ¼   =   3 ^ 1   = 3

by hand: (3 ^ 4) ^ ¼   =   3 ^ (4 x ¼) = 3 ^ 1   = 3   (when you take a power to a power, multiply the exponents.)

or, do it by calculator. one way of finding the fourth root is to use ^ (1/4)

step-by-step explanation:

a orange at the grocery store idk what other product that could be

step-by-step explanation:

assume that you have 3 different side lengths.   apply the pythagorean theorem here:   square each of the two shortest sides; call them a and b, so that their squares are a² and b².   also square the longest side, calling the result c².

now, if a² + b² = c² is true, the triangle is a right triangle; otherwise it is not a right triangle.