Solve the following using front-end estimation 2.85+1.34
a. $2+$1=$3
b. $2+$1+$1=$4
c.$2+$1+$2=$5
d.$3+$2=$5

it is a reproduction.

step-by-step explanation:

6, 10

9, -13

12, -21

18, -23

step-by-step explanation:

you just add 6 to the x-coordinate and subtract 10 from the y-coordinate.

about 0.75 hours

step-by-step explanation:

6(h+1)/2=a

a=area

step-by-step explanation:

its the same thing as a square or rectangle but after multiplying two sides you need to divide it by two.