She spent 17 hours tutoring
$210 = 7 hours
$20 x 10 hours = $200
$210 + $200 = $410
7 Hours + 10 Hours = 17 Hours
It would first be 0.7 and then 1.1
<span>The probability that a randomly selected monthly cell phone bill is more than $127 is given by

</span>
Answer:
see below
Step-by-step explanation:
Closed under addition, subtraction and multiplication
Not closed under division :-
for example 3/4 = 0.75 which is not an integer
Answer:
15
Step-by-step explanation: