(2x + 3) + (2x + 3) + (2x + 3) + (2x + 3)

Four congruent circular holes with a diameter of 2 in. were punches out of a piece of paper. what is the area of the paper that is left ? use 3.14 for pi

F(n + 1) = f(n) – 8. if f(1) = 100, what is f(6)?

Can some one explain how to slove specifically, what is the value of x? 0.9(x+1.4)-2.3+0.1x=1.6 enter the answer as a decimal in the box. x= ?