2.35 * 10^-4 move the decimal 4 places to the left
.000235
6.5 * 10^-3
move the decimal 3 places to the left
.0065
7.07*10^-5
move the decimal 5 places to the left
.0000707
The original height of the plant is 20 inches, and each week for 4 weeks its height increases by 2h inches, so at the end of 4 weeks its height would be:
20 + 4(2h) = 20 + 8h
Now for the next two weeks the plant grows in height by h inches each week, so we need to add a further 2h inches to the equation. Thus the expression that shows the height of the plant after 6 weeks is:
20 + 8h + 2h = 20 + 10h, therefor A is the correct answer
You can use the Distributive Property to split this into an easier problem.
(
x -14m) + (<span>
x 36)
-7m + 18</span>
I hope this makes some sence! The answer should be (3,2)
