Can someone check me answers to see if i’m right

Question one: 3rd option

(Pt. 2 written):

b=ac^2

b=1/8 (4)^2

b= 2

Question two: It is option 2

(Pt. 2 written):

v= m-k

v= -2+7

v= 5

Question three: option 2

(Pt. 2 written):

q=ps/r

q=14(-4)/-7

q=-56/-7

q=8

Question four: It is choice number 3

(Pt. 2 written):

m=3n/4

m=3(8)/4

m=24/4

m=6

Question five: It is choice number 2

(Pt. 2 written):

x=wy+z

x=-8(-5)+6

x=40+6

x=46

6 hours 48 min

step-by-step explanation:

68÷5=13.6

13.6×30=408min=6 hours 48 min.

hope to and hope that my answer is brainliest.(follow me )