The label on a 2 1/2 pound grass seeds states that it will cover an area of 400 square feet based on the information what is the number of square feet that 1 pound of grass seed will cover
a.120 square feet
b.160 square feet
c.180 square feet
d.190 square feet
show work

B.

Step-by-step explanation:

if you want to check it would be

160 x 2.5 = 400

OR

400 / 2.5 = 160

i hope this helps!

so, start with 1xxx. With various values of d, we get

d=1: 1234, 2345, 3456, 4567, 5678, 6789

d=2: 1357, 2468, 3579

d=3: 147? bzzt

Now, with negative d, we have

d=-1: 9876, 8765, 7654, 6543, 5432, 4321, 3210

d=-2: 9753, 8642, 7531, 6420

d=-3: 9630

So it should be 21