Find the equation for the area, A, of the rectangle with a length of n-5 and a width of n-1. A A=n(n-1)+5(n-1)
B n^2-5n+5
C n^2-6n+5
D n^2+5

C. -6n+5

Step-by-step explanation:

Area of a rectangle =l x w

A=(n-5)(n-1)

Use distributive property

-n-5n+5

Combine like terms

-6n+5

The answer is in the image 

The total nom of  code that can be used is equal to 5+3 = 8

For every 8 cars there are 7 trucks

Therefore,

Cars:Truck=8:7

Answer is B)8:7

The solution is in the following image

The answer is in the image 

The wood before starting =12 feet

Left wood=6 feet

Wood used till now=12-6=6 feet

Picture frame built till now= 6/(3/4)

=8 pieces

Therefore, till now 8 pieces have been made.

The wood before starting =12 feet

Left wood=6 feet

Wood used till now=12-6=6 feet

Picture frame built till now= 6/(3/4)

=8 pieces

Therefore, till now 8 pieces have been made.

The wood before starting =12 feet

Left wood=6 feet

Wood used till now=12-6=6 feet

Picture frame built till now= 6/(3/4)

=8 pieces

Therefore, till now 8 pieces have been made.

The answer is in the image