F(x)= 2/3x+3, what is the value of f(12)

The length of a rectangle is x times the square root of 100. the width is one-half y more than three-halves x. given that the area of the rectangle is 125 cm2, which equation could represent the rectangle in terms of x and y? a) 5xy − 15x = 125 b) 5xy + 15x = 125 c) 15x2 − 5xy = 125 d) 15x2 + 5xy = 125

0if x and y vary inversely and y=6 as x=7, what is the constant of variation?

What is the value of x in this triangle? a. 53° b. 62° c. 65° d. 118°