VERY URGENT PLZ HELP If f(x)=−x , then evaluate f(a−4) .

A) −9a+20

B) −9a+12

C) −a−20

D)−4

∆abc is reflected across the x-axis and translated 2 units up to give the image ∆a'b'c' with coordinates a'(1, 1), b'(2, -1), c'(2, 1). what are the coordinates of the preimage ∆abc? a. a(-1, 1), b(-2, 3), c(-2, 1) b. a(1, 1), b(2, 3), c(2, 1) c. a(1, -3), b(2, -1), c(2, -3) d. a(1, -3), b(2, -5), c(2, -3)

Tickets to a science exposition cost $5.75 each for studentd and $7.00 for adults. how many students and adults went if the ticket charge was $42.75

1. find the area of the unshaded square 2. find the area of the large square 3. what is the area of the frame represented by the shaded region show