Estimate sums: :
use rounding or compatible numbers to estimate the sum.
222
+
203

225

Step-by-step explanation:

The rounding system is used by rounding the numbers so by rounding the method would be:

And compatible numbers would be rounding to the nearest five:

So the compatible numbers gives you the exact answer but it´s not always this way.

1/5^2 = 7.56/45

5x + 5

step-by-step explanation:

you should always add the diagrams and graphs we cannot see. this particular question is kind of borderline because we can make a graph for you.

(f + g)x = -x^2 +3x + 5 + x^2 + 2x

(f + g)x = 5x + 5

the graph of z = 5x + 5 is shown below. always use desmos when in doubt.