Aman was surprised when he found an old bank account statement in his mother's attic. money had been left for 30 years in a bank account paying simple annual interest. the statement showed that originally $500 had been put into the account. when he called the bank, he found that there is now $1550 in the account! what is the annual interest rate?

Convert the mixed numbers into improper fractions. convert the improper fraction to mixed numbers.

Titus works at a hotel. part of his job is to keep the complimentary pitcher of water at least half full and always with ice. when he starts his shift, the water level shows 4 gallons, or 128 cups of water. as the shift progresses, he records the level of the water every 10 minutes. after 2 hours, he uses a regression calculator to compute an equation for the decrease in water. his equation is w –0.414t + 129.549, where t is the number of minutes and w is the level of water. according to the equation, after about how many minutes would the water level be less than or equal to 64 cups?

How can you check that you have correctly converted frequencies to relative frequencies?