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=MODULE 3 Queries=

**Mathsworld** __ **Ex 8.2 q 8b** __ 400gm = $2 1.5kg = $4 3kg = $5 Altogether $11

__ **Ex 8.3** __ __ **q 5** __ s=seascape L=landscape 50s+60L=$9000 s=1.2L Solve on calculator s=90 L=75

**__q 6__.** s = standard boot w = work boot Cost of Standard boot = 10s+20,000 Cost of Work Boot = 8w+24,000 Cost of Standard Boot = Cost of work Boot 10s+20,000 = 8w+24,000 hence 10s-8w = 4,000 s+w = 5125

Solve on calculator s = 2500 and w = 2625

__ exercise 8.5: __ __2c extrapolate__ Extrapolate means predict outside of the given data.

__ 4d average __ Average annual increase means the overall gradient increase

__** Ex 8.5 q 6d ** __ Find gradient of the descent. 2500/35 = 71.5 m/min

__**Essential Further qs difficult. In particular section Ex 16H q 2**__. C = 2x+16 R = $10x

Break Even Point is R = C 2x+16=10x therefore x = 2 items So the break even point is (2,20)

__** Essential Ex16 G, Q8 **__ A + B = 60 kg

5A + 8B = 60 * 6

A=40 B=20