A) Original price : y =10.x
Cheaper brand : y = 7x
The original box is $3 more than the cheap one. Proof:
Suppose 1 box is bought of each (x=1),original will cos10 & the cheaper $7
b) Each time he buys a cheap brand he save $3 ($10-$7), on 5 cheap boxes, he would save $3 x 5 boxes = $15
You will need to show all the answers that are at 25 or less.
Please see the attached paper for the inequality and the graph of the possible solutions.
A filled in circle means to include that value.
Answer:
3 + 0.25x
Step-by step answer:
1. add like terms inside the bracket 8+4=12
2. divide each term in bracket by 4
12/4 = 3
x/4 = 0.25x
let the number = x
x*80/100 = 55
x = 5500/80
x=68.75
After rounding off, it will remain 68.75
Ok so -2= 12, -1=7, 0=2, 1=-3 and 2=-8