Amother wants to invest $6000 for her children's education. she invests a portion of the money in a bank certificate of deposit (cd account) which earns 4% and the remainder in a savings bond that earns 7%. if the total interest earned after one year is $ 360, how much money was invested at each rate?
how much money was invested in the cd account?
$
(round to the nearest cent.)
how much money was invested in savings bonds?
$
(round to the nearest cent.)

Money invested in CD account: $2000

Money Invested in Savings Bond: $4000

Step-by-step explanation:

Given

Total amount=$6000

Let  

x be the amount invested in CD at 4%

And

6000-x be the remaining amount invested in savings bond at 7%

So mathematically writing

0.04x+0.07(6000-x)=360

0.04x+420-0.07x=360

-0.03x+420=360

-0.03x=360-420

-0.03x= -60

x= -60/(-0.03)

x=$2000

So the amount invested in CD is $2000.

And the amount invested in savings bond is:

=6000-x

=6000-2000

=$4000  ..

yes. we do proportions in probabilities.

d

step-by-step explanation:

hello and welcome!

so, when we see the words "proportional" along with a table, we need to know that we're looking numbers that divide by the same thing.

looking at this table, we simply have to do a trial and error, and divide to see which numbers have the same quotient. if you look at choice a & c, they both have equal quotients for three of the numbers, with one exception, so those can't be the answer. looking at b, there is no similarity, so that can't be it. then, we see d; if you divide all the numbers in the table, you'll see that they all divide by two, which is a proportional relationship, and our answer!

also, always remember that the x will always be the number that goes into y, and somewhere behind this table, is a formula. for this specific table, the formula would be:

since our x-value is being divided by two to get the y-value. and if they were to ask for more numbers in the series, this is the formula you would use to find them.