Answer:
d
Step-by-step explanation:
I took the test. Hope I could help!
Three hundred four million, Eight hundred thousand Four hundred
and standard form is the way you wrote it, 304,800,400
Answer:
b. 
f. 17 hours
Step-by-step explanation:
Charges for coming to my house = $68 (this will be the constant of the equation)
Amount charged per hour labor = $17
hours = h
Total amount paid to Mike = 357
The equation that represents this situation can be expressed as:

Solve for h
(subtraction property of equality)

(division property of equality)

Mike was in my house for 17 hours.
Answer:
if it is a test why are u cheating
Step-by-step explanation:
It's the first one, an algebraic expression contains variables