If r(x) = 3x – 1 and s(x) = 2x + 1, which expression is equivalent to mc015-1.jpg?

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.

Which of the following is an example of a rational number? a. π b. √ 9 c. √ 8 d. 3.8362319

Idon't get undoing if its pass adding and subtracting so can someone ? x-2 over 5 = 18