Select the expression equivalent to (2.1x+4.3)−(−3x−7). A −0.9x−2.7
B −0.9x+11.3
C 5.1x−2.7
D 5.1x+11.3

im not sure

step-by-step explanation:

30 units^2

step-by-step explanation:

area is l × w

the length is 3

and the width is 10

3 × 10= 30 units squared

i hope this is what you were looking for.

see attached graph

answer: (c) m∠qpo + (2x + 16)° = 180°

step-by-step explanation:

the opposite angles of a quadrilateral are supplementary.

so, ∠o + ∠q = 180°   and   ∠p + ∠r = 180°

since ∠r = 2x + 16°, we can use substitution as follows:

∠p + ∠r = 180°

∠p + (2x + 16)° = 180°