A chemist needs 30 liters of 25% acid solution. She has containers of 10% solution and 30% solution. She begins to make a table: How many liters of each should she combine to get the needed solution?
If necessary, express your answer in decimals, and round to the nearest tenth.
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Aretha wanted to gather data about the cost of local bowling leagues in her area. she plotted the data and determined that the average bowling league costs consist of a one-time registration fee and a monthly fee modeled by the equation y = 15x + 20. identify and interpret the y-intercept in this model. the y-intercept is 20. this is the cost per month. the y-intercept is 20. this is the cost of registration. the y-intercept is 15. this is the cost of registration. the y-intercept is 15. this is the cost per month.