Answer:
B, I believe.
Step-by-step explanation:
I only know #19
Boots=x
Shoes=x-15
3(x-15)+2x=120
3x-45+2=120
5x-45+2x=120
5x=165
X=33
Boots=$33
Answer: 
Step-by-step explanation:
Given: The number of days Jonathan ran = 5
The most he ran in 1 day = 3.5 miles
Therefore, the maximum distance he ran in a week= 
Let x be the distance Jonathan could have rum in a week, such that

Hence, the required inequality is
.
Answer:
$5
Step-by-step explanation:
If every candy bar is $0.50 and they sell 10 just do
0.50 x 10 = 5
Answer:
Yes.
Step-by-step explanation:
Yes, it is possible. For example, 0.2 and 0.2 both have one decimal place and one significant digit. Their product, 0.04, has one significant digit, but has 2 decimal places.