Answer:
The price of the cell phone without the coupon= $500
Step-by-step explanation:
Step 1: Express discounted amount
The discounted amount can be expressed as a function of the original cost of the phone as follows;
D=r×A
where;
D=discounted amount
r=coupon rate
A=original price of the cell phone before the coupon
In our case;
r=45%=45/100=0.45
A=a
replacing;
Discounted amount=(0.45×a)=0.45 a
Step 2: Amount she pays up
Amount she pays=Original cost of cell phone-discounted amount
where;
Amount she pays= $275
original cost of cell phone=a
discounted amount=0.45 a
replacing;
$275=a-0.45 a
0.55 a=275
a=275/0.55
a=500
The price of the cell phone without the coupon= $500
Answer:
Graph 4
Step-by-step explanation:
It crosses at 1 (y-intercept) and has a slope of 1/2
Answer:
568.32 x 104 = 59105.28
Step-by-step explanation:
If you would like to increase £84 by 3%, you can calculate this using the following steps:
3% * £84 = 3/100 * 84 = £2.52
£84 + £2.52 = £86.52
The correct result is £86.52.
Answer:
360
Step-by-step explanation:
You can solve this by doing 18 times 20 is 360: and then dividing 360 by 18, results in 20.
