Answer:
Given
f
(
x
)
=
4
⋅
7
x
For
x
=
−
1
we have
f
(
−
1
)
=
4
⋅
7
−
1
=
4
7
using
a
−
n
=
1
a
n
For x=2, we have
f
(
2
)
=
4
⋅
7
2
=
196
Step-by-step explanation:
Answer:
5 20/50
Step-by-step explanation:
"The square of x" means x^2, so we can eliminate options A and D.
"product of 8 and x" means that 8 and x are multiplied together (like 8x)
If x^2 is increased by 8x, we are adding x^2 and 8x together.
<span>B. x^2 + 8x</span>
To find the unit price, divide the unit by the the total amount:
2.97/4
0.7425
Round this to the nearest cent:
$0.74
Hope this helps!
If the mower is pulled over a flat horizontal surface, then first get the component of the force in the direction of the mower's displacement:
(120 N) cos(30°) = 60 √3 N ≈ 103.923 N
Then the work done by the boy on the mower over a distance of 12.8 m is
(103.923 N) (12.8 m) ≈ 1330.2 Nm ≈ 1330 J
