Ava's sister paid a 4.5% annual interest rate
Her sister paid $54 more than she borrowed, divide that by 3 (years till she paid)
54/3 = 18
That's $18 for every year she'd had the $400 loan out, divide it by 4 to get the percentage
18/4 = 4.5/100 = 4.5%
Answer: <u><em>x=8</em></u>
Step-by-step explanation:
Simplifying
3(x + -2) = 18
Reorder the terms:
3(-2 + x) = 18
(-2 * 3 + x * 3) = 18
(-6 + 3x) = 18
Solving
-6 + 3x = 18
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '6' to each side of the equation.
-6 + 6 + 3x = 18 + 6
Combine like terms: -6 + 6 = 0
0 + 3x = 18 + 6
3x = 18 + 6
Combine like terms: 18 + 6 = 24
3x = 24
Divide each side by '3'.
x = 8
Simplifying
x = 8
Answer:
width = y - 5
Step-by-step explanation:
area = y^2 + 4y - 45
(y + 9)(y - 5)