Our club shirts are available in two sizes: small shirts coat $27 each and large shirts cost $31 each. Last week a total of 14 shirts were sold with a total cost of $398. how many of each size shirt was bought?

Please include working out

How do you use the elimination method for this question? explain, because i really want to understand!

Find the cosine function that is represented in the graph.

Dexter read 11 science fiction books and 5 history books. lena read 9 science fiction books and 4 history books. compare the students’ ratios of science fiction books to history books. 1. determine the ratios’ form:    science fiction books to history books 2. write the ratios as fractions:    dexter: 115; lena: 94 3. rewrite with a common denominator. 4. compare. 5. answer the question. determine which shows the correct comparison of the ratios for this problem.