24x4=96
you want to multiply the cost by the number of dvd's, so in this case the cost is 24 and you have 4 dvds
<span>A) Y= -5x+3
B) -x -7y = 13 substituting equation A) into B)
B) -x -7*(-5x +3) = 13
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<span>B) -x +35x -21 = 13
B) 34x = 34
x = 1
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<span>A) Y= -5*1 +3
A) Y= -2
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If you draw out lmno as a parallelogram, then lo is always going to be opposite of nm which means they are equal to each other. nm = ol or x+11=2x+4 or 7 = x, then nm = ol = 18...
We first need to pick the correct piece to use. In this case, we will use f(x) = -x-5 because -5<=-4.
Then, we use direct substitution:
f(-4) = -(-4) - 5
f(-4) = -1
