Shannon is putting a fence around her garden, except where there is a gate that is 3 feet wide. One foot of the fence costs $43. The cost of the gate is $128. Write an expression that represents the total cost of the fence and gate.

x = the number of feet of fence

y = the total cost of the fence and gate

43x + 128 = y

[fence costs $43 per feet(x) plus the cost of the gate(128) equals the total cost of the fence and gate(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,

answer: 48

just remember to use pemdas:

parentheses

expressions

multiplication

division

addition

subtraction