What is the inverse equation of the function “C = 8.25n + 30” ?

What number line represents the solution set for the inequality -1/2 greater than or equal to 4

The number of members f(x) in a local swimming club increased by 30% every year over a period of x years. the function below shows the relationship between f(x) and x: f(x) = 10(1.3)xwhich of the following graphs best represents the function? graph of f of x equals 1.3 multiplied by 10 to the power of x graph of exponential function going up from left to right in quadrant 1 through the point 0, 0 and continuing towards infinity graph of f of x equals 10 multiplied by 1.3 to the power of x graph of f of x equals 1.3 to the power of x

The equation of a parabola is given. y=18x2+4x+20 what are the coordinates of the focus of the parabola?