Which of the following sets of numbers could represent the three sides of a triangle? {8, 11, 16}
{7, 12, 19}
{9, 21, 31}
{10, 22, 34}

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.