❗️PLS HELP NOW❗️ Christi alters a skirt. She cuts 7 inches off the bottom of the skirt and
then adds a 5-inch ruffle to the skirt's remaining bottom edge.
Which expression best represents the final length of the skirt??
A. 2 - 3
B. 2 - s
C. s - 2
D. s - 12
Evan chose D as the correct answer , how did he get that answer??

heudhduxhdnshenebdutbbt

step-by-step explanation:

hrhhdhdbbrurb ees

m∠a is 90°

m∠b is 40°

let x and 400 - x be the two numbers.  

==> 0.80x + 0.85(400 - x) = 400 - 68 from the statement of the problem.  

< ==> 0.80x + 0.85(400 - x) = 400 - 68  

==> 340 - 0.05x = 332  

< ==> -0.05x = -8 ==> x = 160, the first number ==> 400 - x = 240, the second number.