Abrand of cereal had 1.2 milligrams of iron per serving. then they changed their recipe so they had 1.8 mg of iron per serving. what was the percent increase in iron?

50%

Step-by-step explanation:

The percent increase is found by first finding the difference between the two values and then dividing that difference by the original amount.  Then to get the percentage, multiply by 100.  For us, that looks like this:

Do the subtraction to get

×100

And that comes out to 50%.

y=−9/2x+10

step-by-step explanation:

let's solve for y.

0−9x−2y=−20

step 1: add 9x to both sides.

−9x−2y+9x=−20+9x

−2y=9x−20

step 2: divide both sides by -2.

−2y

−2

=

9x−20

−2

y=

−9

2

x+10

$450.00 for 6 weeks

or

$300

step-by-step explanation:

$200.00 for first week $50.00 x5 equals $250 plus $200 equals $450.00 for six weeks.

$200 for first week

$200 x 0.10 = $20

$20 x 5 = $100

$200 + $100 = $300