1 7/10 is equivalent to the improper fraction 17/10
Move the -5 over by adding 5 to both sides
3x^2+4x+5=0
must use quadratic formula
for an equation in the form
ax^2+bx+c=0
x=

a=3
b=4
c=5
x=

x=

x=

x=

remember that√-1=i
x=

x=

x=

or x=
When x = -6 the denominator = 0
There is a hole in the graph at (-6,0)
The answer to your question is D
.5 x 8= 4 pounds
.5 x 10=5 pounds
.5 x 12=6 pounds
.5 x 16=8 pounds
You gave no options but the simplest way to solve this is to set it equal to all of the answers to see if it is correct.