B) is not invertible, while the others are.
a) The inverse is x+2
c) The inverse is

d) The inverse is
0.80 because when you line up the decimals 0.80 is bigger
0.80
0.08
Answer:
C. q Superscript 12
Step-by-step explanation:

Answer:
140 minutes
Step-by-step explanation:
After 28 mins you've gone 4 miles, assuming this rate is constant and you dont slow down or speed up, in order to get to 20 miles you will have run 5x as much (20/4 = 5), thus 5x the amount of time (28x5).
20/4 = 5
5x28 = 140
Answer:
b = 12
Step-by-step explanation:
Complementary angles add to 90 degrees
a+b = 90
78+b = 90
Subtract 78 from each side
78-78+b = 90-78
b = 12