A$1,000 face value bond is currently quoted at 100.8. the bond pays semiannual payments of $22.50 each and matures in six years. what is the coupon rate?

We are given with
F = 1000
b = 22.50
P = 100.8

We use the formula to get the coupon rate
b = Fib
Substituting the given values
22.50 = 1000 ib
ib = 0.0255 or 2.25%

The coupon rate is 2.25%

The correct question is
Which equation represents a line that is perpendicular to the line represented by 2x - y = 7?

A. y = -1/2x + 6
B. y = 1/2x + 6
C. y = -2x + 6
D. y = 2x + 6

we know that
if two lines are perpendicular
so
the slopes
m1*m2=-1

we have 
2x-y=7> y=2x-7> slope m1=2

find slope m2
m2=-1/m1> m2=-1/2

the slope m of the perpendicular line must to be -1/2
so

 the answer is
y = -1/2x + 6