What is the justification for the step taken from line 2 to line 3?

3x+9-7x=X+10+X

4x+9=2x+10

6x+9 = 10

6x=1

What is the product of (3x-7) (3x-5)

Sand falls from an overhead bin, accumulating in a conical pile with a radius that is always three times its height.

Solve: cos2x+3sinx-2=0

The university took a phone survey of 3421 students about tuition. Of the students surveyed 2004 of those students believed that tuition was too high.

To which real number subsets do the following real numbers belong? 0, 3, 7, 11, 15, 18 A. irrational numbers and whole numbers B. integers and rational numbers C. natural numbers and irrational numbers D. integers and irrational numbers

A display of pens has 8 hooks. Each hook can hold 3 packages of pens and there are 3 pens in each package. If the display is completely full how many pens does it hold

Consider the experiment: flip a coin, then roll a number cube

When 24 is divided by the positive integer n, the remainder is 4?

How would you write 17/7 as a repeating decimal

Paul has a life insurance policy that will pay his family $30,000 per year if he dies. If interest rates are at 1.5% when the insurance company has to pay what is the amount of the lump sum that the insurance company must put into a bank account?