Question

HELP PLEASE!! The cost of calling Raymond's friend in Singapore is $3.00 plus $0.40 per minute. The cost as a function of time is shown in the graph. Write an equation that represents the cost as a function of the number of minutes. Identify the slope and y-intercept and describe their meanings. Find the cost of a 20-minute call.

Answer 1

The equation would be y= .40x + 3 , The slope would be 2/5 and the y intercept would be 3 , the cost of a 20 minute call would be 11 dollars