4(x+7) becomes 4x+28 you multipli the 4 in parentheses ans 2(x+7) becomes 2x+14
4x+28=2x+14 you move the x termes to the left and other numbers to the right look:
4x-2x=14-28 when you change the sides always change the sign +or-
2x=-14
2x/2=-14/2
X=-7
Answer:4000
Step-by-step explanation:40 times 100 is 4000
Answer:
where
denotes number of drinks and
denotes number of pastries.
Step-by-step explanation:
Let
denotes number of drinks and
denotes number of pastries.
Cost of the average drink = $4.50
Cost of the average pastry = $2.25
Total amount = $5,250
Therefore,

Answer:
-4x^2, -3x, -5
Step-by-step explanation:
-4x^2 + 2x - 5 (1 + x)
-4x^2 + 2x - 5 + 5x
-4x^2 - 3x - 5
Answer:
12 inches
Step-by-step explanation:
if it is a square then you do 3×4 to get the perimeter