Simplify using the distributive property: 5(n-3)=

5n -15

explanation: when you distribute the 5 to the n that makes it 5n

then you'll do the same for 5 * -3 which will give you a negative 3  

because linear equations are a lot simpler than quadratics equations, and linear equations formula is a lot easier to memorize. that's why i think they're harder.

$25

step-by-step explanation:

25 - 4.50 = 20.5

20.5 / 2 = 10.25

10.25 + 10 = 20.25

20.25 - 12.50 = 7.75

therefore the answer is $25 as shown as the first number.