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Algebra
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19 Nov 2019

Jonny needs to come up with a recursive formula for the sequence -2, 1, 4, 7, 10. What should it look like?

A) a1 = -2, an = an−1 + 3

B) a1 = -2, an = an−1 − 3

C) a1 = -2, an = -2 + (n − 1)3

D) none of the above

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Patrina Schowalter
Patrina SchowalterLv2
15 Feb 2019
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Related questions

Pascal's triangle : The file is attached for reference.

1. In how many ways can you get to the fountain at point E6 from your starting point A1??

2. Mark the number of ways you can get to each point from A1.

3. Describe any patterns you see in the numbers on the grid??

4. The completed grid is called Pascal's triangle. rotate your copy of the grid 45degree clockwise so that point A1 is at the top. Explain why the grid is called a triangle.

The population of deer in Dearborn County is initially 7900 deer. Each year the population decreases by 30% due to hunting and development, so a gaming commission introduces 200 new deer each year. Select all that are true for the situation.

a.) A recursive rule is a1 = 7900, an = (0.7)an-1 + 200

b.) An explicit rule is an = 200(0.7)n-1

c.) There are about 2403 deer at the beginning of the fifth year.

d.) There are about 3148 deer at the beginning of the fifth year.

Please I need Help

1. Write the explicit formula for the geometric sequence a1 = –7, r = 4.

a. an = 7(–4)n–1

b. an = –7(4)n–1

c. an = 4(–7)n–1

2. An engineer determines that the shape of a mirror surface in a motion sensor can be described by the equation 9x^2 – 25y^2 – 12x + 20y = 26. Identify the conic section that represents the shape of the mirror.

a. parabola

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c. ellipse

d. hyperbola

3. A contractor must pay a penalty if work on a project is not completed on time. The penalty on the first day is $200. The penalty increases to $500 on the second day, to $800 on the third day, and so on. The contractor accumulated a penalty of $4100. How many days after the due date was the project completed?

a. 14 days

b. 23 days

c. 5 days

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