Answer: 9
Step-by-step explanation: Here, we have the expression <em>4x - 7</em> and we want to evaluate the expression when <em>x</em> is equal to 4.
To evaluate an expression, we simply plug the value
of the variable into the expression and solve.
So here, since <em>x</em> is equal to 4, we have 4(4) - 7.
4(4) is equal to 16.
So we have 16 - 7 which is equal to 9.
So the value of our expression when <em>x</em> is equal to 4 is 9.
3 + 4x = 33
-3 on both sides
4x = 30
/4 on both sides
x = 7.5
Answer:
Rod is 7 1/2 years old
60 divided by 4 is 15 15 multiplied by 3 is 45 pages
6.6
×
10
−
8
3.3
×
10
−
4
=
2
×
10
−
4
Explanation:
6.6
×
10
−
8
3.3
×
10
−
4
=
6.6
3.3
×
10
−
8
10
−
4
=
2
×
10
(
−
8
)
−
(
−
4
)
- as
a
m
a
n
=
a
m
−
n
=
2
×
10
−
8
+
4
=
2
×
10
−
4
The first one because it’s 4 pounds unless it’s one piece of meat that just wieghs four pounds
