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2. 5, -20, 80, -320, ______, ______, ______ M3U1D2c Warmup: Find the next three terms of each sequence. Explain how you found the terms. 2, 6, 18, 54, ______, ______, ______ 2. 5, -20, 80, -320, ______, ______, ______ 162 486 1,458 Multiplied by 3 each time 1,280 -5,120 20,480 Multiplied by -4 each time

Collect Parent Letters Homework Check: Document Camera Collect Parent Letters

M3U1D2c Compound Interest Objective: To Interpret the parameters in linear or exponential functions in terms of context.

Compound Interest Simple interest – interest is paid only on the principal Compound interest – interest is paid on both principal and interest, compounded at regular intervals Example: a $1000 principal paying 10% simple interest after 3 years pays .1  3  $1000 = $300 If interest is compounded annually, it pays .1  $1000 = $100 the first year, .1  $1100 = $110 the second year and .1  $1210 = $121 the third year totaling $100 + $110 + $121 = $331 interest

Compound Interest Period Interest Credited Times Credited per year Rate per compounding period Annual year 1 R Semiannual 6 months 2 Quarterly quarter 4 Monthly month 12

Compound Interest Compound interest formula: A = the compound amount or future value P = principal i = interest rate per period of compounding n = number of periods I = interest earned

Compound Interest Example: $800 is invested at 7% for 6 years. Find the simple interest and the interest compounded annually Simple interest: Compound interest:

Compound Interest Example: $32000 is invested at 10% for 2 years. Find the interest compounded yearly, semiannually, quarterly, and monthly yearly: semiannually:

Compound Interest Example: (continued) quarterly: monthly:

Distribute and discuss PROJECT: Distribute and discuss Postponed

Classwork: U1D2c WS #1-10

Homework: Finish CW AND have your parent read the class letter then sign & return the actual Math III acknowledgement sheet to me.