What is the first term if term 15 is -67 and term 21 is -97?

3

Step-by-step explanation:

The n th term of an arithmetic sequence is

= a +(n - 1)d

where a is the first term and d the common difference

Given the fifteenth term is - 67, and term 21 is - 97, then

a + 14d = - 67 → (1)

a + 20d = - 97 → (2)

Subtract (1) from (2) term by term

6d = - 30 ( divide both sides by 6 )

d = - 5

Substitute d = - 5 into (1)

a + 14(- 5) = - 67

a - 70 = - 67 ( add 70 to both sides )

a = 3

Thus the first term is 3

step-by-step explanation:

ok one would be money, and the other would be refreshments or something similar. if each bag of popcorn is 5.00 and each drink is half of that that means drinks are 2.50 the proper way to do that would to look and see how much of each you can buy without exceeding a limit of 30.00

answer: b

step-by-step explanation: im sorry bro bro but thats not a eqation the human mind can answer and plus im a devil