A doctor recommends that adults eat at least 49 grams of whole grains per day. Which inequality shows this, using g for grams of grains? a. g = 49
b. g ≥ 49
c. g < 49
d. g ≤ 49

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.