Answer:
$24
Step-by-step explanation:
y = total cost x=each addition pound or part of a pound
y = 8 + 2x
Substitute the value of x in. (8 because it is still 2 dollars more for the 0.4)
y = 8 + 2(8)
Solve
Total cost = $24
5 pounds
Infinitely many
12x+1=3(4x+1)-2
Expand 3(4x+1)-2
12x+3-2
12x+1
12x+1=12x+1
Simplify.
0=0
True for all values of x
BELOW
Y=23
X=6.5
B
If 3+n=13,then n=10.0
