1) Remove the integers which are congruent to 3 (mod 7) from the following list of five integers, and sum the integers that remain.
85 ,49,479 , -67 , 12,000,003 ,-3

2)

The units digit of a perfect square is 6. What are the possible values of the tens digit?
(Need Explanation with proof)
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Is every rectangle is a parallelogram? true false

Imogene invested $8,000 in a bank account that pays 8 percent simple interest at the end of each year. her friend invested the same amount in stocks where the growth of the investment is represented as 2,000 times the square root of 2 less than the time lapsed in years. if y1 and y2 represent the amount earned in dollars and t is the time lapsed in years, which system of equations correctly represents the situation?

Solve the given system of equations. 2y= -x+9 , 3x-6= -15