4.167 I think but I'm not completely sure
Answer:
b. quadratic
Step-by-step explanation:
Quadratic models are used to model certain real-world situations such as: 1) Values decrease then increase 2) Values increase and then decrease 3) Values depending on surface area.
Let the original amount be A. Double that would be 2A.
Then, 2A = Ae^(r*5), or 2 = e^(5r).
Taking the natural log of both sides: ln 2 = 5r. Then r = (ln 2)/5 = 0.14
The interest rate would have to be 13.86% per year, written here as r=0.14.
Answer:
1080 in^2
Step-by-step explanation:
Divide the shape into 2 rectangles:
Area = Length x width
1 : 7 x 30 = 210
2: (25 -7) x (30-20) = 18 x 10 = 180
Total area = 210 + 180 = 390 square feet.
