Compose an expression to find the 20th term of any arithmetic sequence in terms of just a and d. Look at the pattern in part A with the first three terms to help you.
20th term:

Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.

Write an equation of the line that passes through 9,2 and is parallel to the line y=5/3x+9

An airplane travels at an unknown elevation before it descends 3 miles to an elevation of 15 miles. find the elevation of the plane before its descen.