D
Divide the whole thing by 2
2(X^2+8x-5)
X^2+8x. =5
Half of 8 is 4 sq it so you add 16
X^2+8x+16= 5+16
(X+4)^2=21
Answer:
7 to the second power... because 7 times is 49 and 49-49 is 0... so 7 to the second power
103 1/3. In February, it will be 1243 1/3. In March, it will be 1346 2/3. In April, it will be 1450.
Determine the slope of line AB
m = 5
Determine the slope of the lines from the options
First option: y = 5x + 3, the slope is 5
Second option: y = (1/5)x + 3, the slope is 1/5
Third option: y = -5x + 3, the slope is -5
Fourth option: y = (-1/5)x + 3, the slope is -1/5
Parallel lines are similar in the slope. So the line which is parallel to line AB must have the slope of 5.
The answer is first option.
Then using trygonometric table or a graph we read that:
Period of cosinus function = 2π
So the last answer is
