Which of the relations below is a function?

{(red, sign) (yellow, sign) (red, light) (green, light)}

{(blue, bird) (red, car) (yellow, bus) (yellow, taxi)}

{(red, apple) (purple, grape) (yellow, banana) (green, pear)}

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 type of graph would allow us to quickly see how many students between 100 and 200 students were treated?

Which expression is equal to (21)(7)(3x) using the associative property? (21 · 7 · 3)x (7)(21)(3x) 32(7 + 3x) (3x)(7)(21)