Answer:
$1.29
Step-by-step explanation:
$16.72-$1.24=$15.48
$15.48/12 ice cream bars=$1.29
−
3.1
x
+
7
−
7.4
=
1.5
x
−
6
(
x
−
3
2
)
Step 1: Simplify both sides of the equation.
−
3.1
x
+
7
−
7.4
=
1.5
x
−
6
(
x
−
3
2
)
−
3.1
x
+
7
+
−
7.4
=
1.5
x
+
(
−
6
)
(
x
)
+
(
−
6
)
(
−
3
2
)
(Distribute)
−
3.1
x
+
7
+
−
7.4
=
1.5
x
+
−
6
x
+
9
(
−
3.1
x
)
+
(
7
+
−
7.4
)
=
(
1.5
x
+
−
6
x
)
+
(
9
)
(Combine Like Terms)
−
3.1
x
+
−
0.4
=
−
4.5
x
+
9
−
3.1
x
−
0.4
=
−
4.5
x
+
9
Step 2: Add 4.5x to both sides.
−
3.1
x
−
0.4
+
4.5
x
=
−
4.5
x
+
9
+
4.5
x
1.4
x
−
0.4
=
9
Step 3: Add 0.4 to both sides.
1.4
x
−
0.4
+
0.4
=
9
+
0.4
1.4
x
=
9.4
Step 4: Divide both sides by 1.4.
1.4
x
1.4
=
9.4
1.4
x
=
6.714286
Just multiply the total length by the fraction:
14.3 * 1/10 = 1.43 miles
Option B is the correct answer