Answer:
Step-by-step explanation:
$6/(2 DVDs) = $3/DVD, and $8/(4 CDs) = $2/CD
a DVD costs $3
a CD costs $2
Lynn bought 4 DVDs and 2 CDs for 4×$3 + 2×$2 = $16.
Pierre bought d DVDs and c CDs for $20.
d is 0, 2, 4, or 6
c = (20-3d)/2
(d,c) = (0,10), (2,7), (4,4), or (6,1)
10 times a number y
3 subtracted from a number x
12 times a number n
hope this helped :)
Step-by-step explanation:
questions 8, obviously the mid part of the parabola is 3, that is the axis of symmetry.
question 9, only one solution because you only have one parabola.
Answer:
X=0
Y= -2
Step-by-step explanation:
Y+2=x
Y+10=2x+8
Y+2=x
Y+10=2(y+2)+8
Y+10=2y+12
Y-2y=-10+12
Y=-2
