Don works in home construction. he determined that the function t(a)=144a/9.252 gives the total number of 9 in. tiles needed to cover an area of a square feet, when spacing the tiles a quarter inch apart. find t(400) and explain what it means.

Which of the following is true for the relation f(x)=2x^2+1

Atown has a population of 12000 and grows at 3.5% every year. what will be the population after 7 years, to the nearest whole number?

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?