Answer:
0.6
Step-by-step explanation:
3.8 - 3.2 = 0.6
________________________

Answer:
4y + 9
Step-by-step explanation:
"y times 4" means 4y because 4*y = 4y
And then "add 9."
Which would be 4y + 9.
Its the last one, D.
f/2 x 1 to f/2
This is the correct work, but your answer should be written as 5x/2.