Perform the multiplication or division and simplify. (30 points)

Use set builder notation to represent the following set: { -3, -2, -1, 0}

Haley buys 9 pounds of apples for $3. how many pounds of apples can she buy for $1?

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.