Which equation matches the function described in the table X=0,1,2,3,4 Y=-1, 3, 7, 11, 15

Last month, a 770 g box of cereal was sold at a grocery store for $3.10. however, this month, the cereal manufacturer launched the same cereal in a 640 g box, which is being sold at $2.50. what is the percent change in the unit price?

Which inequality is equivalent to -3x < -12? x < 4 , x < -4 , x > 4, x > -4

Bob the builder is making 480kg of cement mix. this is made by cement, sand and gravel in the ratio 1: 3: 4