Determine which sequence is an arithmetic sequence.

Question 13 options:

a)
–7, –3, 1, 5, ...

b)
1
5

,
1
7

,
1
9

,
1
11

, ...
15, 17,19, 111, ... {"version":"1.1","math":"15, 17,19, 111, ..."}

c)
3, 6, 12, 24, ...

d)
−10, 5, −
5
2

,
5
4

, ..

A is correct

Step-by-step explanation:

because the sequence is the 4 and 4

-7 + 4= -3

-3 + 4= 1

1 + 4= 5

3

step-by-step explanation:

in standard form:

a= dictionaries

b= maps

you have to buy 3 dictionaries, so put a 3 next to the a (dictionaries) so that you can multiply them by each other.

a3+b= 60 (the amount of money you have)

we already know the cost of a=15 so replace a with $15

($15 x 3)+b=60

multiply 15 and 3 to get $45 and replace it with $45

45+b=60

and then replace b with 15 to get the total:

45+15=60

that means you have $15 left after buying 3 dictionaries.

15 divided by the cost of a map ($5) equals 3.

so you can buy 3 maps.

sorry if it was confusing!