exam
Maths Puzzle
Numerical Ability
10/21=5/16a
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exam Other Question
20. Ken has worked at the same company for many years. The function A(t) gives his annual salary A at any time t, where t is the number of years after 1980.
a. Ken's friend Gabrie
Solve the system by substitution
x+y=12
y=2x
y=12+x
Need to solve and graph, the second equation is confusing as to how it fits into the first equation.