Let’s label Mark’s marbles as ‘x’ and don’s as ‘y’.
so Don has 1 more than 2 times ‘x’.
This is written as:
y=2x+1
73 is the sum of ‘x’ and ‘y’, so x+y=73.
To solve for x, substitute our equation for y:
x+(2x+1)=73
Simplify:
3x=72
x=24
Now that we have x, solve for y:
y+24=73
y=49
Mark has to sell 24 marbles,
Don has to sell 49 marbles
Hope this was helpful!
Answer:
-a^2 + -4a + 3a + 12
Step-by-step explanation:
FOIL
First terms: -a x a = -a^2
Outside terms: -a x 4 = -4a
Inside terms: 3 x a = 3a
Last terms: 3 x 4 = 12
Answer:
The alphabet
Step-by-step explanation:
c or a
