Step-by-step explanation:
The perpendicular line has a slope that is the negative reciprocal of the other line's slope. So, in this case, the slope should be 1/3 (it's positive because a negative times a negative is a positive). This gets rid of all of the answers except for the last, I suppose.
Answer:
Step-by-step explanation:
This is an exponential equation of the form

Answer:
$0.31
Step-by-step explanation:
Unit price is measured by dividing the price by the amount of an item, so 3.72/12 = 0.31
The cost of one ticket will be £8.20
<em><u>Explanation</u></em>
Suppose, the cost of one ticket is 
As the offer says "buy 3 tickets and get a ticket free" , it means <u>they actually need to pay for 3 tickets</u>.
So, the total cost of 3 tickets 
Each of four friends pay £6.15 , so the <u>total amount they pay</u> 
Thus, the equation will be .....

So, the cost of one ticket will be £8.20
Answer:
y = 14 + 2x
Step-by-step explanation: