Final answer:
Bonnie will need approximately 5.33 gallons of sealant for 1200 square feet of decking.
Step-by-step explanation:
According to the information given, if Bonnie can waterproof 450 square feet of decking with 2 gallons of sealant, then the ratio of sealant to decking is 2 gallons per 450 square feet. To find out how many gallons of sealant Bonnie will need for 1200 square feet of decking, we can set up a proportion:
2 gallons / 450 square feet = x gallons / 1200 square feet
Cross multiplying, we get:
2 * 1200 = 450 * x
x = (2 * 1200) / 450
Simplifying, we find that Bonnie will need approximately 5.33 gallons of sealant for 1200 square feet of decking. Since 5.33 gallons is less than 6 gallons, the statement is true.