Unit 3 Corrections

# Unit 3 Corrections - 44/60 Exercise4.1...

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Math Assignment 3 Siearra Fries 44/60 Exercise 4.1 2) (2)x+(2)5y=(2)0 (-5)x+(-5)2y=(-5)6 2x+10y+0 -5x-10y=-30 -3x/-3=-30/-3 x=10 10+5y=0 5y/5=-10/5 y=-2 6)   3x+2y=10 -3x+5y=-38 x=6 y=-4 B 2) -6x-3y=-24 6x+27y=-24 24y=-48 24y/24=-48/24 y=-2 6x+3(-2) =24 6x/6=30/6 x=5 8)

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Math Assignment 3 Siearra Fries LCD 84, 36 21x+36y=-8 24x+54y=-7 x= -2/3 y=1/6 Ex 4.2 4a) 5y/5=11/5-4x/5 slope = -4/5 y int = 11/5 4c) -1/2y/-1/2= 2x/-1/2 -1/-1/2 y int= 2 slope= -4 4h) slope =  ½ y int = -2 Ex 4.4 B 2) 7X-4Y=12 3/4X+2/3Y=21 12(3/4)x+12(2/3)y=12(21) 3(3x)+8y=252 9x+8y=252 14x-8y=12
Math Assignment 3 Siearra Fries 23x/23=264/23 x=12 9(12)+8y=252 108+8y=252 8y/8=144/8 y=18 4) y=3x-140 x+y=940 x+(3x-140)=940 4x=1080 x=270 270+y=940 y=670 6) x+y=2320 y=4/3x-60 2.33x-60=2320 x=1020 1020+y=2320 y= 1299 1300 Review 6c) x+2y=175 x=3y 3x= Jacket Price 5x(jacket+pants)=175 x=35 3(35)= \$105 Jacket Price

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Math Assignment 3 Siearra Fries Ex 5.1 2a) i)TR= 12X 12(1000)=12,000 at capacity ii)TC = \$1200=\$8X TC= 1200+8(1000) =1200+8000 =9200 at capacity 2b) Break Even \$12x=\$1200+8x i)x=300 break even in units ii)\$12 x 300 =  \$36,000 Break Even in dollars iii)
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