a company that sells phones generates revenue given by the function r(x) = x2 + 20x + 50 (where x is the number of phones produced per month). the cost of production is given by the function c(x) = 50x + 30. which function gives the profit earned by the company?

x^2 + 70x + 80
x^2 + 70x + 20
x^2 − 30x + 20
x^2 + 30x + 20

Given f(t) = 282 - 53 +1, determine the function value f(2). do not include f(z) = in your answer

Which represents the inverse of the function f(x) = 4x? h(x) = x + 4 h(x) = x – 4 h(x) = x h(x) = x

Guys i need ! graded assignment grade 8 checkpoint 2, part 2 answer the questions below. when you are finished, submit this assignment to your teacher by the due date for full credit. total score: of 9 points (score for question 1: of 4 points) 1. the cost of renting a car for a day is $0.50 per mile plus a $15 flat fee. (a) write an equation to represent this relationship. let x be the number of miles driven and y be the total cost for the day. (b) what does the graph of this equation form on a coordinate plane? explain. (c) what is the slope and the y-intercept of the graph of the relationship? explain.