Dr. Rose Aspen has $490 in her checking account and wants to have at least $200 at the end of the year. She withdraws $7 each day for painting supplies,
scalpels, and gloves. How many days can Dr. Aspen take money out of that
account?

Add the fractions, and simply the result to lowest terms. 2/3 + 2/7= ?

You were told that the amount of time lapsed between consecutive trades on the new york stock exchange followed a normal distribution with a mean of 15 seconds. you were also told that the probability that the time lapsed between two consecutive trades to fall between 16 to 17 seconds was 13%. the probability that the time lapsed between two consecutive trades would fall below 13 seconds was 7%. what is the probability that the time lapsed between two consecutive trades will be between 14 and 15 seconds?

If 30 lb of rice and 30 lb of potatoes cost ? $27.60? , and 20 lb of rice and 12 lb of potatoes cost ? $15.04? , how much will 10 lb of rice and 50 lb of potatoes? cost?