A basketball court is in the shape of a rectangle. It has a length of (x - 7) meters and
a width of (x + 3) meters. The expression below represents the area of the court in
square meters:
(x - 7)(x + 3)
Which of the following simplified expressions represents the area of the basketball
court in square meters? (5 points)
1) - 6x + 3
2) x2 – 21
3) x2 - 4x – 21
4) x2 - 7x + 3

3)

Step-by-step explanation:

first you multiply the x that's in the first parenthesis by the x in the other parenthesis giving you x2

then you multiply that same x by the 3

you now have x2 + 3

Do the same with the -7

you should get x2 + 3x - 7x - 21

Combine like terms( +3x and -7x)

and you get

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.

answer: its the third option.

step-by-step explanation:

i just took the test.