Answer:
they are both natural numbers
40 x .05 = 2
40 + 2 = 42
$42 with sale tax
$2 total sales tax
Answer:
Given: Ellentown college has approximately 3 times 10 to the 3 power students and pengrove university approximate 30,000 students.
⇒ number of students approximately in Ellentown college = 
also,
the number of students approximately in Pengrove university = 30,000 or 
We have to find how many times as much is the number of students at pengrove university as the number of students at Ellentown college.
= 
therefore, 10 times as much is the number of students at pengrove university as the number of students at Ellentown college.