You define a function f(x) which gives the cost of buying x packages of cookies. You are asked for the domain of the function. That is, what values can x take on? x is the number of packages bought.
It makes no sense to buy a negative number of packages. It also makes no sense to buy 1/2 a package or 3/4 of a package as the store won’t sell you a fraction of a package. Try going to the store and buying half a package of oreo cookies. I doubt you’ll get very far :)
So it makes sense to buy 0, 1, 2, 3, 4, ... boxes of cookies. These are whole numbers. So the domain is the set of whole numbers. You could also write the domain like this {0, 1, 2, 3, ...} making sure to use the curly brackets as those denote a set.
Answer:
y > -14
Step-by-step explanation:
-5(y+2) < 60
-5y - 10 < 60 (Expand the term on the left)
-5y < 70 (Bring the numbers to the right)
y > -14 (Divide both sides by -5. Note that the inequality sign changes as we are dividing by a negative number)
Hence Answer is <u>y > -14</u>
Answer:
<em>C. 1/10 • 33</em>
<em>D. 0.1 • 33</em>
<em>E. 10/100 • 33</em>
Step-by-step explanation:
Knowing that
10% = 0.1 in decimal form
10% = 1/10 or 10/100 in fraction form
of = multiply
<em>Thus, the following is correct:</em>
<em>C. 1/10 • 33</em>
<em>D. 0.1 • 33</em>
<em>E. 10/100 • 33</em>
<u><em>We can also solve to find the answer:</em></u>
<em>10% of 33 = 3.3</em>
<em>0.1 x 0.33 = 0.033</em>
<em>10 x 33 = 330</em>
<em>1/10 x 33 = 3.3</em>
<em>0.1 x 33 = 3.3</em>
<em>10/100 x 33 = 3.3</em>
<u><em>Hence answer =</em></u>
<em>C. 1/10 • 33</em>
<em>D. 0.1 • 33</em>
<em>E. 10/100 • 33</em>
<em>[RevyBreeze]</em>
Answer:
what grade is this for
Step-by-step explanation:
2 consecutive odd positive integers....x and x + 2
x^2 + (x + 2)^2 = 130
x^2 + (x + 2)(x + 2) = 130
x^2 + x^2 + 4x + 4 = 130
2x^2 + 4x + 4 = 130
2x^2 + 4x + 4 - 130 = 0
2x^2 + 4x - 126 = 0
2(x^2 + 2x - 63) = 0
2(x - 7)(x + 9) = 0
x - 7 = 0
x = 7
x + 9 = 0
x = -9 (cant be this one because it is negative
so x = 7...and x + 2 = 7 + 2 = 9......ur 2 numbers are 7 and 9
