Answer:
The word "Of" in an equation is interpreted to be multiplication. Also, you must move the decimal two places to the left to change a percent to a decimal.
1. 20 * .12 = 2.4
2. .3 * 70 = 21
3. 300 * .25 = 75 Blue marbles
4. 40 * .35 = $14
Answer: plot a point at (-8, -5)
The y coordinate flips from positive to negative, or vice versa, when we reflect over the horizontal x axis. The x coordinate stays the same.
The rule can be written as 
Answer:
70 + 5 + 8/10 + 6/100 + 4/1000
Or
7*10 + 5*1 + 8*1/10 + 6*1/100 + 4*1/1000
The answer is A) 7x103 is 3.5 times larger than 2x103