Step-by-step explanation:

Rewrite csc(x) in terms of sin

Multiply the numerator. Notice that the factors in the numerator are reciprocal so they will factor out to 1.

Notice that cotangent and tan are reciprocal so

Firs you would do 4b-15b and get -11b. Next you would do -7+3 and get -4. The final expression would be -11b-4
Answer: 18 1/2 inches
Step-by-step explanation:
A = l x w
A = (x+2) ( 3x)
A = 3x^2 + 6x
answer
Area of a rectangle = 3x^2 + 6x