The answer to this question is area=length*width
25/100 = 1/4 (divide both numerator and denominator by 25)
350/1000 = 35/100 = 7/20.
total cost = membership +cost per class* number of classes
y = 275+5*x
Choice C
Combine like terms the solve. For example:
5x + 20x = 100
25x = 100
/25 = /25
x =4
Let's call the left side of this tirangle y and downside z.
3² + 6² = y²
y² = 45
y² + z² = (3 + x)²
45 + z² = 9 + 6x + x²
x² + 6² = z²
45 + x² + 6² = 9 + 6x + x²
45 + x² + 36 = 9 + 6x + x²
45 + 36 - 9 = 6x
72 = 6x
x = 12