18. the table shows the amount of money in a savings account after several weeks
week
savings
$125
$140
$155
$170
$185
$200
a. is the sequence arithmetic or geometric? explain. find the common difference or common
b. write a recursive formula for the sequence
c. write an explicit formula for the sequence

a. Arithmetic

b.

c.

Step-by-step explanation:

A sequence is arithmetic when the difference between one term and the next is a constant. On the other hand, a sequence is geometric when the next term is found by multiplying the previous by a constant.

In this case, the next term of the sequence can be found by adding $15. Therefore, the sequence is ARITHMETIC ✔️

The recursive formula will be the following:

The explicit formula is the following:

number one is the correct answer

step-by-step explanation: dogs and cats are mentioned, no other animals

pentagon

step-by-step explanation:

the coordinates   a(5, -2), b(3,-1),c(-4,-4) d(-3,8) and e(-1,4) forms the vertices of the polygon when they are connected in order.

in order to classify that which polygon is it with the given coordinates, first count the number of vertices and then count the number of sides it can make with these vertices.

since, the given coordinates have five vertices, therefore, it will make five sides. moreover, pentagon is regular in nature therefore it will be convex.

now, a polygon with five sides is known as pentagon, therefore, the given polygon is the pentagon.