The sum of a number and twenty is greater than four times the number decreased by one solve the inequality

2x+3y=12 x-y=6 solve the following system equations

Let the closed interval [a , b] be the domain of function f. the domain of f(x - 3) is given by (a) the open interval (a , b) (b) the closed interval [a , b] (c) the closed interval [a - 3 , b - 3] (d) the closed interval [a + 3 , b + 3]

The price of an item has been reduced by 30%. the original price was $30. what is the price of the item now ?