Kim had d dollars and she bought a apples for 12 cents each and b bananas for 18 cents each. How many cents did she have left

Explanation:

d dollars = 100d cents

for example, if d = 4, then,

4 dollars = 100*d = 100*4 = 400 cents

So Kim starts off with 100d cents.

She buys 'a' apples, where 'a' is a placeholder for the number of apples. If a = 5, then she bought 5 apples and spends 12*a = 12*5 = 60 cents. In general, she spends 12a cents buying 'a' apples.

Similarly, she spends 18b cents buying b bananas. The letter b is the placeholder for the number of bananas.

Overall, Kim spends 12a+18b cents for buying that amount of apples and bananas. Subtract this expression from 100d to find out how much money she'll have left over.

100d - (12a+18b) = 100d-12a-18b

This left over amount is in cents. If you want to convert to dollars, then you would need to divide by 100.

-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