Answer: 16,17,18
Step-by-step explanation:
(x)+(x+1)+(x+2) = 51
x+x+x+1+2=51
3x+3=51
3x=51-3
3x=48
x=16
x+1 = 17
x+2= 18
Answer: c. OSRN
Step-by-step explanation:
Sides of similar shapes are proportional.
For Rectangle LOSP,
Length = LO = 4+6+8 = 18 units
Width = OS= 12 units
Here,
[proportionality constant]
a. For Rectangle LMQP,
Length = MQ = 12 units
Width = LM = 4 units
Here, 
LMQP is not similar to LOSP.
b. Similarly, for LNRP,
Width = LN= 4+6 = 10
length = NR = 12

LNRP is not similar to LOSP.
c. For OSRN,
Length = OS = 12
Width = ON = 8

OSRN is similar to LOSP.
d. For MNRQ,
Length= NR = 12
Width = MN = 6

MNRQ is not similar to LOSP.
Hence, the shape similar to rectangle LOSP is OSRN.
This is the distributive property because you are distributing the 9 into both terms of the parenthesis.
(10 + 7) x 9 = 10(9) + 7(9)
Answer: Distributive Property