X=salary last year
Need an equation that represents 3000 more than last year's salary
12%(x + $3000) = $4200
multiply everything in parentheses by 12%
.12x + 360 = 4200
Subtract 360 from both sides
.12x = 3840
Divide both sides by 0.12
x= $32,000 salary last year
Hope this helps! :)
Area of a triangle: (b*h) /2
So :
(14,5 * 10.5) /2
=152,25 /2
= 76.125
200 is the correct answer
40-4x=2/3x-10
50=14/3x
150/14=x
75/7=x