The chart below shows the distribution of the number of books in a library. A circle graph titled Types of Books. The largest proportion is Literature, then Fantasy, then non-fiction, then children's. Sahira chooses a random sample from the library and records the type of books in the chart below. Type of Book Number Fantasy 10 Literature 25 Children’s 4 Nonfiction 11 Which explains whether or not Sahira’s sample is representative?

The final cost of a sale is determined by multiplying the price on the tag by 75%. which best describes the function that represents the situation?

Isuck at math ; ^; m a student solved this problem and said the answer is 3 feet. chase had a roll of ribbon that contained 7 7/8  feet of ribbon. he cut off one piece that was 3 5/8  feet long and another piece that was 1 1/4  feet from the roll. how much ribbon was left on the roll? is the student's answer reasonable? yes, the answer is reasonable. no, the answer is not reasonable. it should be about 2 feet. no, the answer is not reasonable. it should be about 13 feet. no, the answer is not reasonable. it should be about 4 feet.

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.