21+919=? For my sister and friend only don’t answer of report :)

What is the measure of angle 1? a.28 b.152 c.168 d.64

What is the remainder when 3x^2-x-10 is divided by x-1 -6,-7,-8, or -9

Emily convinced her mom to buy a giant box of her favorite cereal. her mom doesn't think the box will fit on their shelf. the volume of the box is 1000 cm^3 . the base of the box is 25 cm by 10 cm