An online clothing company sells custom sweatshirts. The company charges ​$3.99 for shipping plus ​$9.00 for each sweatshirt. Write a linear function rule that models the total cost y​ (in dollars) for any number of sweatshirts x. When there is a single shipping​ charge, the linear function rule is y=?

If f(x)=x+7 and g(x)=1/x what is (fog)(x)

If 0° ≤ θ ≤ 90° and cosθ = 11 15 , what is the value of sin (90° - θ)? a) 11 /15 b) 15/ 11 c) 15 /4 d) 4/15

The length of a rectangular board is 3 feet less than twice its width. a second rectangular board is such that each of its dimensions is the reciprocal of the corresponding dimensions of the first rectangular board. if the perimeter of the second board is one-fifth the perimeter of the first, what is the perimeter of the first rectangular board?