Answer:
C.
The equation that represents this situation is -3x = 21. The second number is -7.
Step-by-step explanation:
the answer is a becuse you tacke that little dot and you slid it to the left tow times
Answer:
11.0 cm
P=38 cm
38/3=12.67cm length of one side
Base of triangle = 12.67/2 =6.34 cm
Use formula 

x = altitude of triangle
69 * 0.40 = 27.6
69 - 27.6 = 41.4
41.4 + 41.4(0.07) = $44.30