6. Which set of ordered pairs represents y as a function of x?
a) {(0,0). (-1,2), (-1,-2), (-2,4),(-2,-4)}
b) {(0,0), (1,1). (2.4),(3,9),(3,16))
c) {(0,0), (0,1),(0,2), (0,-1), (0-2)}
d) {(0,0).(-1,-0.5),(-2,-1), (-3,-1.5),(-4,-2))

On a piece of paper graph f(x)=5•(0.4)^x

Tabby sells clothing at a retail store, and she earns a commission of 6.25% on all items she sells. last week she sold a pair of jeans for $32.50, a skirt for $18.95, and 2 blouses for $14.95 each. what was tabby's total commission? a $4.15 b $5.08 c $81.35 d $348.60

9.4.34  question   to estimate the height of a stone  figure, an observer holds a small square up to her eyes and walks backward from the figure. she stops when the bottom of the figure aligns with the bottom edge of the  square, and when the top of the figure aligns with the top edge of the square. her eye level is 1.811.81 m from the ground. she is 3.703.70 m from the figure. what is the height of the figure to the nearest hundredth of a  meter?