Evaluate the following questions:

label Algebra
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schedule 1 Day
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a) 3xy-5y when x=4 and y=7 b) 7x-4y+10 when x=5 and y=2 c) f(x)=3x-19 when x=3 Solve for x: d) x+13=30 e) x-11=18 f) 3x+4=16 g) 7x-5=23
Feb 25th, 2015

please here are your answers:

a 3*4*7- 5*7= 49,     b) 7*5 - 4*2 +10 = 35 - 8 +10 = 37,     c) f(3) = 3*3 - 19 = -10

d) x = 30 -13 = 17,     e) x = 11+18 = 30,     f) 3x = 12, so x = 4,     g) 7x = 28, so x = 4

Feb 25th, 2015

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Feb 25th, 2015
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