5x + 2y =9
X + y= -3
5x+2y=9
2x+2y=-6
__________
3x =15
X =5
5+y=-3
Y=-8
Answer is : (5,-8)
Th coffee seller must have sold 130 coffee case but for him to make at least $3650, he must've sold 131 cups of coffee
Data;
- monthly salary = $3500
- commission = $12
- amount due for commission = $100
- cost of coffee = $25
- total amount = $3650
<h3>Word Problem</h3>
These are verbal expressions used to represent mathematical problems and if we want to solve them, we must translate them into equations.
If his total pay is $3650 and he earns a commission of $12 for every $100 coffee sold.
How many coffee case are inside $100

This shows that for every 4 coffee case sold, she made ($100 + $12) as profit.
If 4 coffee = $112
how many coffee will give us $3650

From the calculations above, he must've sold at least 131 cups of coffee to make $3650.
Learn more on word problems here;
brainly.com/question/21405634
To measure the capacity of a container, you could use : cup, quarts, tablespoons, ounces, gallons and tablespoons.


We could solve for 'x' in the 2nd equation and then plug that into the first equation for 'x' and solve for 'y':

Subtract 6y to both sides:

Divide -2 to both sides:

Plug in 3y + 17 for 'x' in the first equation:


Distribute 5:

Combine like terms:

Subtract 85 to both sides:

Divide 17 to both sides:

This is the y-coordinate of the solution.
(5.0 x 10²) x (3.0 x 10⁸) = 1.5 x 10¹¹ meters = 1.5 x 10⁸ km.