hey guys can u check my answers, if you see one thats not correct pls correct me!

Answer:
b. 300 c. 18 d. 30
Step-by-step explanation:
b. 400/4=100, 100*3=300
c.0.3*10=3, 3*6=18
d.0.75*10=7.5, 7.5*4=30
Answer:
B C and D are incorrect
Step-by-step explanation:
1/2 • 13 is 6.5
3/4 • 400 = 300
(0.3)•60 = 18
(0.75) • 40 = 30
Brainliest please