Answer:

Step-by-step explanation:
The nth term of an arithmetic sequence is given by the formula,

We were given that the 9th term is
.





The sum of the first n-terms is given by the formula,

To find
, we substitute
,
and
.





The correct answer is D
<span>The workers paved 2/5 miles in 1 hour =)</span>
whats the question you are just saying the answer
12 hours = 35 miles
1 hour = 35 / 12
= 2.91666667 miles
= 2 miles per hour.
Answer:
Linear, exponential, and quadratic functions can be used to model real-world phenomena. ... Algebraically, linear functions are polynomial functions with a highest exponent of one, exponential functions have a variable in the exponent, and quadratic functions are polynomial functions with a highest exponent of two.