Miss james has a six square-foot bulletin board in at 12 ft.² bulletin board she wants to cover both boards with index cards without gaps or overlaps each index card has an area of 1/4 ft.² how many index cards does she need

What is the solution to the equation? k/6.4=8.7 2.3 5.568 15.1 55.68

If 3x+8=3x+8 is it one solution or no solution

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.