Four less than two times a number is seven times the sum of that number and 8. Which equation could be used to solve this problem? 1. 4- 20 - In = 8
2. 2n - 4 = 77 + 8
3. 2n- 4 = 7(n + 8)
4. 4- 2n = 7(n+8)​

Scott harris can invest $7,000 in a 1-year cd that earns interest at an annual rate of 4 percent compounded monthly. the amount per $1.00 is 1.040742. he can also invest $7,000 in a 1-year cd at annual rate of 4 percent compounded quarterly. the amount per $1.00 is 1.040604. what is the difference in the amount of interest earned for each investment? a) $0.96 b) $0.81 c) $0.87 d) $0.88

What properties allow transformation to be used as a problem solving tool

Starting at home, emily traveled uphill to the hardware store for 606060 minutes at just 666 mph. she then traveled back home along the same path downhill at a speed of 121212 mph. what is her average speed for the entire trip from home to the hardware store and back?