Question

QUESTION 5

1. In many common situations, people misuse basic mathematical concepts, usually innocently, but sometimes to make "reasonable" ideas sound good. One example is the usage of percents.

A politician recently introduced a measure to increase the sales tax in his city from the current level of 4.42% by adding 3.5 percentage points, saying taxes are "only going up by 3.5 percent."

Let's see if this is true. Calculate the percentage change in the tax rate from the current level of 4.42% to the new proposed level.

Report your answer to one decimal place. Do not include the % sign in your answer. For example, if your answer is 5.2%, write 5.2.

Hint: The answer isn't 3.5.

QUESTION 21

1. Your company purchases a vehicle for $30,000. After recording an initial 25% depreciation, the car will be depreciated by 10% per year. What will be the value of the vehicle after 3 years?

		$16,403
		$12,656.25
		$21,870
		$22.50
		$9402.19

QUESTION 26

1. Find the real roots (or x-intercepts) of the equation, y=-6x^2+10x-3, if they exist.

		{0.833,7.62}
		{-3.6,1.27}
		No real roots
		{1.27,0.39}
		{-15.3,0.833,-4.7}

3.704 points   

QUESTION 27

1. Find the real roots of the equation, y=24x^2+3x-7, if they exist.

	a.	{0.48}
	b.	No real roots
	c.	{-2.27,2.46}
	d.	{-0.75,1.97}
	e.	{-0.61,0.48} Thank you.

Answer 1