Answer:
A. $2.89(m)=$40
B. 13 songs
Step-by-step explanation:
$2.89(m)=$40
m=$40/$2.89
m=13.84
She can download a maximum of 13 songs
Check:
$2.89 (13 songs)=$37.57
$40-$37.57=$2.43 left on her gift card
m=13.84, check that 0.84 of the cost of a song is left over 0.84*$2.89=$2.43
Answer:
y=2x-20
Step-by-step explanation:
For perpendicular lines, find the opposite reciprocal of the original slope. The opposite reciprocal of the slope of this line (-1/2) is positive 2
F(8)=4(8)-2+7(8)
f(8)=32-2+56
f(8)=86
f(-5)=4(-5)-2+7(-5)
f(-5)=-20-2+2
f(-5)=20
f(0)=4(0)-2+7(0)
f(0)=0-2+0
f(0)=-2
$3.00-$2.40 = $0.60
$0.60/$3.00 = $0.2
$0.2x100 = 20% decrease
