Year 1: 7lbs x 3years= 21lbs
Year 2: 21lbs x 3years = 63lbs
33-23=10. 10+23=33. 23-10=13
the numbers are 23 and 10
If 42% of paint is white to get the result we just have to finid 42% of 18.
42% of 18 = 0.42*18=7.56$ - its our result
You just have to substitute the x for the given number and complete the equation. Leave the x-box and laziness and study