Complete the following tasks for this equation: = -2.15. Give an estimate for the solution. Be sure to explain how you arrived at the estimate, either by showing an equation or in words.
Solve the equation. Show or explain your work.
Compared to your estimate, is your answer reasonable? Explain your answer in complete sentences.

ANSWER 1: The estimate for 2.15 is 2. (If you are rounding to the ones.)

ANSWER 2: The estimate for 2.15 is 2.2. (If you are rounding to the tenths.)

Step-by-step explanation:

ANSWER 1: I know this because the one in 2.15 is lower than 5 so the 2 would stay the same. Then the 5 and 1 would turn to a 0.

ANSWER 2: I know this because the 5 in 2.15 is higher than 4 so the 1 would turn to a higher number which would be 2.

Hopefully I explained it well and I did it right because I haven’t rounded decimals in a while.

So sorry if I did it wrong.

constant acceleration- a

constant velocity- c

no velocity or acceleration- b

explanation:

for body moving with a constant acceleration, the rate of change of displacement changes over time. this is proven by the increasing gradient of the curve (a) against time.

a body that is moving at constant velocity covers equal distances over equal periods of time, thus the straight line with a constant gradient c.

a stationary body   covers no displacement as time elapses. thus the flat line with   zero gradient.