The temperature dropped 12 degrees fahrenheit in 8 hours. if the final temperature was -7 degrees fahrenheit what was the starting temperature

∆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)

Solve the given system of equations. 2y= -x+9 , 3x-6= -15

Ten times the square of a non-zero number is eqaul to ninety times the number