exam Maths Puzzle Numerical Ability

(y+10)X=1800
(x+10)Y = 2000

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exam Other Question

I am lost on this one
Graph y=4-|x-3|
and label the intercepts

Thanks YOU HOLD A $1.3 MILLION PORTFOLIO MADE OF TH FOLLOWING STOCKS:
MARKET VALUE BETA
STOCK A .2 MILLION 1.5
STOCK B .5 MILLION 1.2
STOCK C .6 MILLIO