exam Maths Puzzle Numerical Ability

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earned $12,000 last year. He invested part at 3% simple interest and the rest at 4%. in one year, he earned a total of 440.00 in interest. How much did he invest at

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exam Other Question

How many terms are there in each of the following sequences?
a. 51,52,53,54,...,151
c. 10,20,30,40,...,2000
d. 9,13,17,21,25...,353
e. 1,2,4,8,16,32,...,1024
(graphing linear equations)
Graph each wquation by using the x-and y-intercepts.

3x-y=3