4. A rectangle has length 3x + 4 feet. Its width is 7x feet. What is an expression in simplest form for the perimeter of the rectangle?​

2(3x+4)=P(perimeter)

Step-by-step explanation:

what I did was:

y = 0.77(x)

step-by-step explanation:

the jacket retains this value after 23% cut or retains 77% of original value. plug original 87 jacket price for x and the remaining value should be y.

answer:  

step-by-step explanation:

here x represents the height of the pole,

and, the height of the shadow of the pole is 12 feet.

also, the angle of elevation from the top of the pole is 40°,

therefore,

by the low of sine,

which is the required equation for finding the value of x,