Answer:
3.57
Step-by-step explanation:
P=SP -CP
=290-280=10
P%=
=
=
=3.57
Given the equation 
Check all options:
A.
, this means that
Substitute these numbers into the left side of the equation equation:

This option is false.
B.
, this means that
Substitute these numbers into the left side of the equation equation:

This option is false.
C.
, this means that
Substitute these numbers into the left side of the equation equation:

This option is false.
D.
, this means that
Substitute these numbers into the left side of the equation equation:

This option is true.
Answer: correct choice is D.
Answer:
x=3/2
Step-by-step explanation:
equation solving
Answer:

Step-by-step explanation:
Multiply (x + 1) by (2x + 2).
x × 2x is 
x × 2 is 2x
1 × 2x is 2x
1 × 2 is 2
+ 2x + 2x + 2 = 
Answer:
9/4 exact form 2.25 decimal form 2 1/4 mixed number form
Step-by-step explanation: