24x^2 + 10x = 2x(12x + 5)
Answer:
The standard form of a quadratic equation is:
, 
Quadratic Formula Derivation:



Completing the Square:


Square Root property:



Answer:C
Step-by-step explanation:
Answer:
$9
Step-by-step explanation:
The breakfast before tip costs x.
The tip is 20% of x.
The tip is $1.80.
20% × x = 1.80
0.2x = 1.8
x = 1.8/0.2
x = 9
Answer: $9