What is the explicit formula for this sequence? 4,-8, 16, -32, ...
A. an = 4.(-2)(n-1)
B. an = 2.(-4)"
C. an= -2.4(n-1)
D. an = 4.(-2)"

Will give brainliestbased on the topographic map of mt. st. helens, what is the contour interval if the volcano height is 2,950 m?

Calculate the effective quarterly compound interest rate equivalent to a 1% of monthly compound interest rate.

Anew landowner is interested in constructing a fence around the perimeter of her property. her property is 1,080√30 feet wide and 500√20 feet long. what is the perimeter of the property? (recall that the perimeter is the sum of each side of a shape or boundary). a 1,580√40 feet b. 5,320√5 feet c. 3,160√20 feet d. 10,640√5 feet