I think maybe 3) would make the most sense because she wants a random sample of students and the other options are specific on the type of students.
3x-2=4.5 3x=4.5+2 x=2.17
-x+y/2=-1.25 y/2=-1.25+x y=-2.5+2x
Answer:
Y-interception
Step-by-step explanation:
Answer:
7 months
Step-by-step explanation:$90 / $18 = 5 months + 2 months free = 7 months
Answer:
$70
Step-by-step explanation:
According to the problem, calculation of given data are as follows:
Spending money at rate = $5 per day
After 9 days money left = $25
We can calculate the money on day 0 by using following formula,
y = mx + b
Here, y = money left after 9 days
m = rate of spending money
x = number of days
b = money on day 0
So, by putting value, we get
$25 = (-5 × 9 ) + b
b = $25 + $45
= $70