exam
Maths Puzzle
Numerical Ability
The approximate population of San Jose was 460,000 in 1970. In 1980 it was 630,000. Find k in the growth formula and estimate the population in 2020.
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exam Other Question
x^2+5x+4/(x+3)^2 Divide by x+1/x^2-9
Find the value of b so that the graph of bx+5y=8 and has a slope of 4.