$3.60 flag fall plus $2.19 per km. (a) write down an equation to calculate the cost, c, of cab fare for a distance d kilometres.

C = 3.60 + 2.19d

Step-by-step explanation:

The charges for a cab fare are $3.60 as a flag fall and $2.19 per km of journey.

If the cab runs for a distance of d kilometers, then the total cost C will include $3.60 as a flag fall and $2.19 per km for d km.

Therefore, the equation to calculate the total cab fare in dollars will be  

C = 3.60 + 2.19d (Answer)

-3

step-by-step explanation:

a drawing really does here:

so i draw the horizontal line y=2 and the vertical line x=-2 at this intersection i put b (this is where my right angle is going to be).   so point b is at (-2,2).   point a is 5 units long and is also on y=2 so this point has to be (3,2) or (-7,2) -doesn't matter i will go with (3,2).

now we know c is at (-2,y) we don't know the y yet bet we know that c is on x=-2.

we have the area of the triangle is .5bh=12.5

we know the base length is 5 (ab)

we have the height is (2-y) if you look at your

plug in

.5(5)(2-y)=12.5

solve for y to get the y-coordinate for c

2.5(2-y)=12.5

divide both sides by 2.5 giving:

2-y=5

now subtract 2 on both sides

-y=3

y=-3

560

hope this : )