What is the value of the expression

1/2 (m-4) • n

A 1/2
B 1
C 2
D 7/2

b. 1

Step-by-step explanation:

you lised m = 12 and n = 1/4 so...

1/2(12-4) x 1/4

4 x 1/4 = 4/4 = 1

c.

step-by-step explanation:

substitution for (0,1)

y=x^2+4x+1

1=0^2+4(x)0+1

1=0+4(x)0+1

1=4(x)0+1

1=0+1

1=1

substitution for (-3,-2)

y=x+1

-2=-3+1

-2=-2

$15.40 per mile

step-by-step explanation:

you have to round up to 4 because 6 is over 5 so you have to round the 3 up to 4