Answer:
40x - 300,000
7,500
Step-by-step explanation:
profit = revenue - cost
p(x) = 75x - (35x + 300,000)
p(x) = 40x - 300,000
Break even is when profit is zero
40x - 300,000 = 0
40x = 300,000
x = 7,500
Take his age, subtract off 12 and you get the sister's age
(brother's age) - 12 = sister's age
x - 12 = 14
x - 12+12 = 14+12 ... add 12 to both sides to undo "minus 12"
x = 26
<h3>The brother is 26 years old</h3>
29 because perimeter is when you add all the sides together, so you just do 8+6+9+6 which equals 29
Sum of interior angles is 360 for an "any"-gon
