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Atriangle with all sides of equal length is a/an triangle. a. right b. scalene c. equilateral d. isosceles

At the beginning of the year, adrian's savings account balance was \$28$28. each week, he deposits another \$15$15 into that account, and he doesn't spend any of his savings. is his savings account balance proportional to the number of weeks since the start of the year?

Write each rational number in the form a/b, where a and b are integers. 1. 5 1/6 2. -12