Answer:
-1960
Step-by-step explanation:
The expression on the left expands to ...
(4x -7)² = (4x)² +2(4x)(-7) +(-7)² = 16x² -56x +49
Matching coefficients, you have ...
Then the expression c(b+a) evaluates to ...
49(-56+16) = 49(-40) = -1960
1.5
negative times a negative is a positive
4x3/8=1.5
Given:
Left over fence: 13.5 feet
Used during the day:
2.5 ft - 1 pc
6.75 ft - 2 pcs
12 ft - 1 pc
Length of fence at the beginning of the day.
2.5ft(1) + 6.75ft(2) + 12ft(1) + 13.5ft(1)
2.5 ft + 13.5 ft + 12ft + 13.5ft = 41.5 ft
C.
<span>Start with 13.5. Add 2.5 to it. Multiply 6.75 by 2 and add the sum and the product together. Then add 12 to the answer.</span>
The point on the y axis is y=6/5–5