Answer:
Let x = the number of marbles Tim has
Let 2x = the number of marbles Sue has
x + 2x + 15 = 63
3x = 48
x = 16 marbles
Step-by-step explanation:
The old mean was 51 now the mean is 42.33... (round that to 42) 51 - 42 = 9
Answer:
<em>The slope is:</em>

Step-by-step explanation:
The slope m of a line is calculated using the following formula

Where the points
and
are two points belonging to the straight line
Notice in the graph that the line passes through the points
(0, 2) and (2, -1)
Then the slope is:


Answer:
$25.80
Step-by-step explanation:
First find the price of the meal with sales tax. Multiply 6.75% by $72.50.
72.50 * 0.0675 = 4.89
Add this value onto 72.50.
72.50 + 4.89 = 77.39
Divide this amount by 3.
77.39 / 3 = 25.7966...
Round this to the nearest hundredth because we're dealing with money.
$25.80 is how much each person should pay.
I'd say A. 8000, because you'd get the most answers and the biggest variety in answers for a more accurate sample.