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Answer:
<h2>S.A. = 66m²</h2>Step-by-step explanation:
Look at the picture.
We have :
4 rectangles 3m × 4m → A₁ = 3 · 4 = 12 m²
2 rectangles 3m × 3m → A₂ = 3 · 3 = 9 m²
Therefore the Surface Area of the rectangular prism is:
S.A. = 4A₁ + 2A₂
Substitute:
S.A. = 4(12) + 2(9) = 48 + 18 = 66
Check the images for steps.
Therefore, the large jar costs less per gram as it is only 0.0035 compared to the small one which is 0.0037 per gram.
Thus, the large jar is the best value for money.
Answer:
Recursive formula:
Explicit formula:
Step-by-step explanation:
Let n be the number of week, be the number of albums Pam has on week n.
Every week she buys 3 new albums to keep her collection current, then
{The number of albums Pam has on week n is the number of albums Pam has previous week increased by 3}
This is a recursive formula.
Suppose initially Pam has 0 albums. Then the first week she has 3 albums, the third week - 6 albums and so on. Mathematically
The explicit formula is