book Maths Puzzle Numerical Ability

How many positive real zeros does the funtion f(x) = x4 + x3 - 7x - 1 have?

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book Other Question

You have $24.05 with 210 coins in quarters, nickles, and dimes, such that twice the number of quarters is 13 more than the number of nickels. Find how many of each coin you have. The combined area of a square and a rectangle is 64 square centimeters. The width of the rectangle is 2 centimeters more that the lenght of the square, and the length of the rectan