Find the area under the curve over the indicated interval.
y = 4 / x ; [1,10]
4ln10
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Solve the problem.The half-life of a certain radioactive substance is 5 years. Suppose that at time 
there are 28 g of the substance. Then after t years, the number of grams of the substance remaining will be N(t) = 28
t/10How many grams of the substance will remain after 45 years?Round to the nearest hundredth of a gram.
A. 1.24 g B. 0.15 g C. 0.62 g D. 0.31 g
Solve the given inequality (a related function is graphed).x4 + 5x2 - 36 ? 6x3 - 24x 
x-intercepts: (-2, 0), (2, 0), (3, 0)
A. (-?, -2) ? (2, 3) ? (3, ?) B. (-?, -2] ? (2, 3) ? (3, ?) C. (-?, -2] ? [2, 3] D. (-?, -2] ? [2, ?)
Multiply the polynomials using the special product formulas. Express the answer as a single polynomial in standard form.(3x - 7y)2
A. 9x2 + 49y2 B. 9x2 - 42xy + 49y2 C. 3x2 - 42xy + 49y2 D. 3x2 + 49y2
Simplify.1.22 × [(14 - 4.2) ÷ 0.02 + 3.5]
A. 610.64 B. 819.64 C. 710.64 D. 687.44