To find what the tip is, just multiply 0.20 (20% in decimal form) and 10.50, which will be $2.10.
If you want to know the total cost is including tip, just add 10.50 and 2.10 together, which will be $12.60
( a-1 )-1 = a,
( a * b )-1 = b-1 * a-1.
Answer:
domain={8,7,6,5,4,3,2,1,0}
19/18
Step-by-step explanation:
use a calculator dawg lol
Q4
●-4
●2
Q5
a) f(x) = 18x if x≤5
6x+90 if x>5
b) 150
c)