7. jenny find that a baby lizard grows about 0.5 inch every week. Which equation best represent the number of weeks it will take for the lizard to grow to 1 foot long if it was 4 inches long when it hatched.

a. 0.5w+4=1
b. 0.5w+4=1
c. w+4/12=0.5
d. w/0.5+4=1