-6 + x + -7 + - 2x + -6x

What is the smallest integer n such that n\sqrt{2} is greater than 20

What number produces an irrational number when multiplied by -1.25

The expression 1.01*1.005(^t) gives the amount of money, in thousands of dollars, in carter's savings account (t) years after he opens it. what does 1.01 represent in this expression?