Need help with algebra

5. Evaluate (-3)^-4.
a. -81
b. 1/81
c.-1/81
d.81

Match each statement with its corresponding value for the system below: y = -2(3)x and y = 9x - 2 1. the number of points of intersection. -2 2. the x-coordinate of the solution. 1 3. the y-coordinate of the solution. 0

How many square centimeters of wrapping paper will be used to wrap the shoe box?

Aladder that is 20 ft. long against the side of a building. f the angle formed between the ladder and the ground is 75 degrees, how far is the bottom of the ladder from the base of the building?