The least common multiple between 3 and 4 is 12, so we can use this fact to rewrite both 1/3 and 1/4 in 12ths:

We're left with an answer of
7/12, which can't be reduced.
1 bottle cap is 1.2 cm, so two caps would be 2.4 cm ( 1.2 x 2)
The scale is 2.4 cm: 1 foot, so 2 bottle caps would equal 1 foot.
The building is 20 feet tall
20 feet x 2 caps per foot = 40 caps total.
To solve this equation, we will need to isolate y, the variable. These are the steps that follow:
1. Add 0.3y to each side.
2. Subtract 21.3 from each side.
3. Divide both sides by 5.4y.
Try and figure it out yourself! If you have trouble...
The answer is y = -8.5
Answer: a) The function :
f(x) = 5x + 1000
b) f(x) = 2250 dollars
Step-by-step explanation: Please find the attached file for the solution