Let x be the total weekly sales.
His salary is $300/week + 1.8% (x), if he wants to earn $570, then:
300 + 1.8%(x) = 570
1.8%(x) = 270
0.018 (x) = 270
and x = 270/0.018 = $15,000
7.3 is your answer my guy
Area=legnth times width
legnth=6
area=6x+18
subsitute
6x+18=6 times width
undistribute 6 from each term on left side
6(x+3)=6 times width
divide both sides by 6
x+3=width
Let :
P be the Initial Area, = (3500 km²)
r, the rate of decrease = ( - 8.5%)
n, the number of year = 6 years
A the resulting Area: ?
A = P(1+i)ⁿ
A= 3600(1-0.085)⁶
A = 3600( 0.915)⁶
A = 2112.66 km²
