Answer:
Mrs. Snitch will leave a tip of $8.40.
Step-by-step explanation:
$8.40 is 15% 0f 56.00.
10x^2 = 50x.....subtract 50x from both sides
10x^2 - 50x = 0...factor
10x(x - 5) = 0
10x = 0
x = 0 <== this one is eliminated because x cannot be zero
x - 5 = 0
x = 5 <== ur answer
Answer:
Step-by-step explanation:

There are 3 odd primes, namely : 3, 5, 7
The total amount of blocks is 9
The odds of picking and odd prime is 
So first sivid 42 by 3 to get 14. Then multiply 14 by 4 to get 56. So the answer is C