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Simplify the expression.  (Practice using the basic calculator.)20÷5 -3 +2

Evaluate the expression for the given values. 3x+14y2 x=6 and y = 5

Use the distributive property to rewrite the expression. 7(x+2)

Find the product.-9(11)

Find the difference.-1-5

Perform the indicated operations. 5-8·6

Write the interval notation that describes the solution to the following inequality.x≥2

Change the word statement to an equation. Use x as the variable.The sum of twice a number and 7 is 140.

Write the word statement in symbols.Three is greater than or equal to nine.

What is the life span of red blood cells: