Answer:
The selling price would be $420.
Step-by-step explanation:
In order to find the mark up, we need to multiply the amount it originally costs by the percentage it is being marked up.
$300 * 40% = $120
Now that we have the mark up amount, we add it to the original cost to get the sale price.
$300 + $120 = $420
Answer:

Step-by-step explanation:
Using the rule of exponents
×
⇔
, thus
4² ×
=
= 
Yes, she is correct. If you plug 2 into the equation, you will see this:
(1/2)(2) -7
1-7
= -6
So, the pair of values is (2,-6). Emma is correct.
Answer:
Each person should chip in $0.83
Step-by-step explanation:
Total cost =3000km(66/100)(1.20/L)
=45.46 × 1.20
=$54.55
Cost per person = ($54.55/66)
=$0.83 person
Each person should chip in $0.83
Answer:
Yes
Step-by-step explanation:
the ratio is 4/5