For all rational numbers, x + y + z is the same as which of the following? A x + (y + 2)
Xz
B x(yz)
C (xy) + z
D x(y+z)

M∠aoc is a straight angle angle boc = 6x + 29 m∠boc=6x+29 angle aob = 3x + 124 m∠aob=3x+124 ∘ find angle boc

Measure of angles 31 (x+4) (3x+9) me

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?