Answer:

Step-by-step explanation:
For question #1:

For question #2:

Answer:
Shes needs to work 26.67 hours
Step-by-step explanation:
In order to find the amount of time she needs to work, we need to divide the total by the rate that she earns money at. She needs a total of $400 and she gets 15 every hour.
400/15=26.67
Shes needs to work 26.67 hours
Answer:
$65.52
Step-by-step explanation:
y = mx + b
y = amount spent on fuel = ?
m = price per gallon = $3.90
x = gallons = 16.8
b is not needed for this problem
y = (3.90)(16.8)
y = $65.52
Answer:
Rick ran 5.6 miles on Thursday.
Step-by-step explanation:
Let's first find the speed Rick ran on Wednesday.
D=RT
4.2 = (3/4)R
R = 5.6 mph.
D=RT
D=(5.6 mph)(1)
D=5.6 miles
Let me know if this helps!