Arithemetic Sequences

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Presentation transcript:

Arithemetic Sequences September

Warm Up September 26th Seven toffees and three chocolates cost a total of $1.68, whereas four toffees and five chocolates cost a total of $1.65. Find the cost of each of the sweets. The sum of two number is 11 and the difference is 21. Find the two numbers. Solve 5x2 - 35x + 50 = 0

Find the numbers….

Find the pattern…

Number Sequences

Arithmetic Sequences So u1 = 3 d = 1 (the difference)

Practice

Examples

Examples

Examples

Word Problem Ryan is a cartoonist. His comic strip has just been bought by a newspaper, so he sends them the 28 comic strips he has drawn so far. Each week after the first, he mails 3 more comic strips to the newspaper. Find the total number of comic strips sent for weeks 1, 2, 3, and 4. b) Show that the total number of comic strips sent after "n" weeks forms an arithmetic sequence. c) Find the number of comic strips sent after 15 weeks. d) When does Ryan send his 120th comic strip?

Activity Answer the questions on the worksheet about the houses…..

HOMEWORK A Day: Edition 2 Pg. 436-437 #3,4, 7 abc, 9a, 10a B Day: Edition 1 Pg. 402-404 #1,2, 5 abc, 6a, 7a