Determine the total number of roots of each polynomial function. f (x) = 3x6 + 2x5 + x4 - 2x3

Aline has a slope of 1/4 and passes through point (0.4,-1/2). what is the value of the y-intercept?

Jackie purchased 3 bottles of water and 2 cups of coffee for a family for $7.35. brian bought 4 bottles of water and 1 cup of coffee for his family for $7.15. how much does each bottle of water cost? how much does each cup of coffee cost? i need this done

Tim's phone service charges $26.39 plus an additional $0.21 for each text message sent per month. if tim's phone bill was $31.64, which equation could be used to find how many text messages, x, tim sent last month?