What do you have to include in an expression if the word “quantity” is used?

Is the answer parentheses

Like 9 times the quantity of 3+4 which would be equivalent to 9*(3+4)

If f(x)= 3x+6 which of the following is the inverse of f(x)

Will give let f(x)=2x and g(x)=[tex]2^{x}[/tex] graph the functions on the same coordinate plane. what are the solutions to the equation f(x)=g(x) ? enter your answers in the boxes x=[? ] or x=[? ]

The area (a) of a circle with a radius of r is given by the formula and its diameter (d) is given by d=2r. arrange the equations in the correct sequence to rewrite the formula for diameter in terms of the area of the circle.