Answer:
Step-by-step explanation:
Question 1:
First, write the equation out:
4(x+3)=7x-3
solve for x:
4x+12=7x-3
15=3x
x=5
Question 2:
Do the same on the second question:
30-x=3x-6
36=4x
x=9
Answer:
136 minutes
Step-by-step explanation:
The amount that Joe pays is in two parts. He pays a definite amount for the month plus the amount per minute charge.
Thus,
Joe's monthly fee = $3 + $0.11n
where n is the number of minutes.
Joe's bill for the month = $17.96
So that,
$17.96 = $3 + $0.11n
$17.96 - $3 = $0.11
14.96 = $0.11n
n = ![\frac{14.96}{0.11}](https://tex.z-dn.net/?f=%5Cfrac%7B14.96%7D%7B0.11%7D)
= 136
The number of minutes that Joe was billed is 136.
In this case, Joe was billed for 136 minutes for the month.
45 - 7 = 38
You have traveled 38 miles so far.
Answer:
B...........................................................
Each of the family has 54 to spend!