Carol buys a science textbook and a novel for English. She pays $138 to buy both books. The price of the science textbook is $3 less than 4 times the price of the novel. How much did each book cost?

If f(x) = 2x + 2 and g(x) = x? , what is (gºf)(2)?

Ivan began dividing g2  – 6 by g + 1, noting that . he started by placing g in the quotient, as shown below.what is g2  – 6 divided by g + 1? g –  1 –  g + 1  – g  –  7 + g  –  5  + 

The weight of a radioactive isotope was 96 grams at the start of an experiment. after one hour, the weight of the isotope was half of its initial weight. after two hours, the weight of the isotope was half of its weight the previous hour. if this pattern continues, which of the following graphs represents the weight of the radioactive isotope over time? a. graph w b. graph x c. graph y d. graph z