18+2.50=20.50 so tax is 10% so you can put that into a calculator as 20.50*0.10 which equals 2.05 so just add 20.50 and 2.05 which is 22.55 is your final answer
-6<x≤8 would be the inequality
Volume = length x width x height
Volume = 1 x 10 x 20.5
Volume = 205 m^3
Answer:
coefficent matrix
Step-by-step explanation:
P. 366
"If the column of constant terms is not included, the matrix reduces to that of the coefficent matrix of the system"
-1 -3 -1
9 -9 -1
-1 -3 4
21.6 x 6.2 = 133.92
Cheryl can travel on 133.92 miles