You want to do a quick estimate to the ones place of the sum of the following set of data. Pick the correct estimation. 3.5, 6.7, 3.2, 1.7 14
18
15
16

16

Step-by-step explanation:

3.5 rounds up to 4

6.7 rounds up to 7

3.2 rounds down to 3

1.7 rounds up to 2

add them up to get 16

when its 5 or above, estimate upwards.

when its 4 and below, estimate downwards.

-13

step-by-step explanation:

f(x)=2x-5 for f(-4)

f(-4)   means let x=-4

f(-4) = 2(-4) -5

f(-4) =-8-5

      = -13