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Jane has a pre-paid cell phone with Ringular. She can't remember the exact costs, but her plan has a
monthly fee and a charge for each minute of calling time. In June she used 190 minutes and the cost
was $121.50. In July she used 510 minutes and the cost was $265.50.
A) Express the monthly cost C as a function of a the number of minutes of calling time she used.
C(2) = 41.7 +0.42% х
B) If Jane used 229 minutes of calling time in August, how much was her bill?
$

Can someone me with this problem . show your work .

Use the quadratic formula to solve the equation. if necessary, round to the nearest hundredth. x^2 - 20 = x a. 5, 4 b. -5, -4 c. -5, 4 d. 5, -4

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.