Answer:
<em>q</em> = 12<em>x</em>
Step-by-step explanation:
<em>q</em> = 3<em>x</em> + 9<em>x</em>
Combine like terms
<em>q</em> = 12<em>x</em>
Answer: 2x
Explanation:
Whenever we have a number right next to a letter, it implicitly means to multiply. So writing 2x is the same as 2*x or "2 times x". The x is a placeholder for some number.
X = bat
y = ball
x + y = 1.10
x = y + 1.00
Plug y + 1 in for x
(y+1) + y = 1.1
2y + 1 = 1.1
2y = 0.1
y = 0.05
If the ball is 5 cents, then the bat is 1.1-0.05= $1.05