Sarina is crocheting baby blankets for a craft fair. each blanket requires 1000 m of yarn. she has 5 balls of yarn: 1 ball of pink yarn and 4 balls of blue yarn, 3 of which are equal in length. the expression 1000x−[y+3z+(z−50)] represents how much more yarn sarina needs to crochet the blankets for the fair. explain what each of the following expressions represents: 1000x[y+3z+(z−50)]3z+(z−50)and (z−50).
you!