In set 1 I realize that if there is a negative number multiplying a positive the answer will be a negative but when multiplying 2 positives equals a positive and then when you multiply 2 negatives it will equal a positive and the same for set 2 and 3 problems from set 3, on of the problems on set 3 says that it equals zero because 4 times 0= 0, so that's something everyone should know,

Math each whole number with a rational,exponential expression

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?

What is the perimeter of an equilateral triangle if each side is (x+3)?