What is the value of 4i^4-2i^2, where i is the imaginary number?

You went to a park with $50 and decided you want to rent a horse to go horse back riding. it costs $10 for the first hour and $6 each additional hour. If you want to go home with $10 in your pocket, how many hours did you go horse back riding?

Write the fraction in simplest form 25/100

A theater charges $24 for adults and $12 for senior citizens. On a recent weekends when 541 people attended the theater the total receipts was $8676. How many people that paid were senior citizens

Peter sells cards in packs of 12 and envelopes in packs of 27. If Martha wants the same number of each, what is the minimum number of cards that she will have to buy?

What is the opposite of 4.2

Square root 2x-1+2=5 what is x equal to?

People are entering a stadium at a steady rate of 40 people per minute. After 60 minutes there are 2500 people in the stadium. If no one left during the 60 minutes, how many people were in the stadium before the gates opened?

This is an angle having a measure greater than 90° and up to 180°

The cost of c of ham shandwhich at a deli varies directly with the number of sandwiches n if c=$54 when n is 9 what is the cost of snadwhiches when n is 3

The ratio of two numbers is 5:3. Their sum is 64. What is the smaller number?