Insert ∈ or ∉ in each blank to make the resulting statement true. 13 _____ {3, 5, 12, 14}

In Exercises 15–30, write each number in scientific notation.3.14159

Find each sum or difference. -15+6

Simplify each exponential expression: (-5x^3y^2)(-2x^(-11)y^(-2))

Multiply or divide as indicated. Write answers in lowest terms as needed. (1/8)*(10/7)

In Exercises 29–34, find the union of the sets. {1,3,5,7}∪{2,4,6,8,10}

Find each sum or difference. 13 + (-4)

In Exercises 31–50, perform the indicated computations. Write the answers in scientific notation. If necessary, round the decimal factor in your scientific notation answer to two decimal places.(3X10⁴)(2.1X10³)

Insert ∈ or ∉ in each blank to make the resulting statement true. 0 _____ {0, 2, 3, 4}