exam
Maths Puzzle
Numerical Ability
substitution method
2x-y=-5
x+5y=14
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exam Other Question
2 studants have 920$ altogether. HOw much does each have if 5/7 of the sum of the first one is equal to 3/5 of the sum of money of the second one?
Please help me with the following problem:
f(x)=3x^2-4x and g(x)=3x+7
a) simplify (f o g)(x)
b)find the domain of 2/g(x)
c) f(x+h)-f(x)/h