Question

The revenue of a furniture store varies directly as
the amount of money spent in advertising. If the
store spends $4,000 in advertising one month
and their monthly revenue is $510,000, how
much should they spend in advertising if they
want next month’s revenue to be $700,000?

Answer 1

can you create a proportionality equation??

Answer 2

I am pretty sure its R= KA

Answer 3

exactly, so k is a constant and you are given values for 4000 and 510000 so can you work out K?

Answer 4

which would turn out to 510,000 = k4000?

Answer 5

yeah so solve for K

Answer 6

I did but my answer doesn't math any of the other ones : A. $5,490.20
B. $7,000
C. $89,250,000
D. $549.02

Answer 7

first we need to calculate the answer, the question doesn't ask for k but for a different value of A.

so what do you get for K

Answer 8

so we use the 7000,000?

Answer 9

So if you use the equation you have created before:\[510,000 = 4000K\]
then calculate K
When you get K you we will then calculate the value for 700,000 yes.

Answer 10

So what do you get for K

Answer 11

127.5

Answer 12

brilliant,
so now we had R = K A right so now we know k, this is a constant to so make R (revenue) = 700,000 and calculate A

Answer 13

ohhh $5,490.20

Answer 14

Perfect

Answer 15

where in the problem does it say to solve for A though?

Answer 16

`qs

Answer 17

well i kind of assumed that when you created the equation you meant that
Revenue (which you called R) = K(a constant) x Advertising(you called A)
So from that you got R = KA

So they asked you to calculate the amount of advertising to get a revenue

Answer 18

so because they want the Advertising this is was in your equation you are calling A.
so yes in equation form they are looking for A

Answer 19

Does that make sense or am I just being confusing

Answer 20

ohhh so in order to solve for A we need K because they don't want 4000 they want to know what they need

Answer 21

exactly and we can do that because k is constant so it doesn't matter what values of A we are looking for so if we are given one scenario we can calculate them all.