Answer:


Step-by-step explanation:
2x² +21x-61 = (x+7)²
expand
2x² + 21x - 61 = x² + 14x +49
move everything to one side
x² + 7x - 12 = 0
use quadratic formula

plug in the values

solve



The second option is correct, I,e what you've chosen
Answer:
$6.22
Step-by-step explanation:
60v = $15
60v/60 = $15/60
v = 0.25
The original value of the baseball card is $0.25
If you use/make a number line, then you will see that the answer is -18 or a. When using a number line, negative = ← and positive = →.