In a certain country, customers are charged a flat fee of $55.50 for up to 50 local calls. customers pay $0.35 per call for each call above this limit. and a customer used $87.00 of local calls how to calculate the number of local calls

The table shows the balance of a money market account over time. write a function that represents the balance y (in dollars) after t years.

Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}

Zoey made 5 1/2 cups of trail mix for a camping trip. she wants to divide the trail mix into 3/4 cup servings. a. ten people are going on the trip. can zoey make enough 3/4 cup servings so that each person gets one serving? b. what size would the servings need to be for everyone to have a serving?