When the last digit of a number is 5 and higher, it is rounded (or estimated) to be higher. Therefore since 7 is more than 5 you can round it to 10. 289 can be rounded to 290 or if 0s are more appealing then 300

**Answer: The answer to the question is 2880.**

**136937:)**

**Step-by-step explanation:**

**Answer:**

D

**Step-by-step explanation:**

35:100

/5. /5

7:20

and you cant simply anymore

**Answer:**

The constant of proportionality is 0.3, or K=0.3.

**Step-by-step explanation:**

The chart I attached shows points that are plotted on the proportional line. In order to find the constant of proportionality from these points, you have to divide the amount of change by the number of years. For example, 3 divided by 10 or 6 divided by 20. This results in 0.3, which means that every year, there is 0.3 centimeters of change in the sea level.

**Answer: the third option m(x) = - 7x**

**Justification:**

1) For a function to have inverse function, the original function has to be one to one. This is for the original function two (or more) images cannot have different inputs. That condition is satisfied by the function m(x) = - 7x, since it is a straigh line.

2) the function b (x) = x^2 + 3 is a parabola. That means that, except by the vertex, every image is realated with two inputs.

For example, b(x) = 103 => x^2 = 103 - 3 = 100 => x = 10 and x = -10.

3) For the function d(x) = - 9, you cannot tell the input value for the image because it is the same image for any value of x.

4) The function p(x) = |x| also has a pair of images for the same value of x (excpet for the vertex).

For example, for x = - 100 and x = 100, p(x) = 100, so you cannot tell the x value given the p(x) value.