Encircle the like terms of the given expressions inside the bracket. a) 6x [ 9xy 6y -5x ]

b) -bc [ 3bc -10b -8cb ]

Complete the solution of the equation. find the value of y when x equals to 28 x+3y=28

Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.

What is the y-intercept of the line with the equation 3x + 4y = 12?