exam Maths Puzzle Numerical Ability

Graph the following equations; calculate the slope, x-intercept, and y-intercept, and label the intercepts on the graph.

2x + 3y = 9

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exam Other Question

f(x)=2x^3+2x^2+112x we need to factor this polynomial Carla invested $28,000, part at 14% and part at 9%. If the total interest at the end of the year is $3,370, how muc did she invest at 14%

These problems confuse me each time, can you help? Thank you so much!