Answer:
a4 = -2
Step-by-step explanation:
a2 = 13 -5 = 8
a3 = 8 -5 = 3
a4 = 3 -5 = -2
Answer:

Step-by-step explanation:
To find the inverse of y=4x+12, all you need to is swap x an y and then remake y the subject.
y=4x+12
Swap x and y:
x=4y+12
Solve for y:
Subtracting 12 on both sides:
x-12=4y
Dividing 4 on both sides:

So 
Answer:
7/4 i really hope its these one or im failimg my quiz
Pounds will be represented by x and the cost will be represented by y. The equation is Y=3x. For the graph just use substition for x and then calculate the outcome and graph it.