Yiska has 56 photographs left to scan. If she can scan 6 photographs per minute, write an inequality to show in how many minutes will she have less than 20 left to scan.

Which of the following is correct interpretation of the expression -4+13

Which system of linear inequalities is represented by the graph?

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.