Answer:
add up the prices of everything they're buying, divide it by 75 and then multiple the whole answer by 100.
Step-by-step explanation:
25%
height grown in a year = 10 - 8 = 2
9
40+9 = 49
6x9 = 54
49+5=54
-15,-10,25
-1,-2,-2,-2,-6
3,2,-2,1,
Go to symbolab.com, online calculator, so good trust me