Cal is measuring the temperature changes in four substance over different time periods as part of a school project. He records his data in the four tables shown. Which data shows a proportional relationship? Choose all that apply.

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?

Kathy spent 5/8 of her money on books and another 1/6 of her money on stationeries. what fraction of kathy’s money was left?

Find solution of the linear equation y = 2/3x + 1/3