What is it called when a solution set is empty

Phil had made $1200 deposits in an annuity due at the beginning of each quarter in an account earning 6% interest compounded quarterly.

Sam visits 3 stores to nd the best deal for a pair of jeans. Store A o ers a discounted price of $120 for 4 pairs of jeans. Two pairs of jeans sell for $100 at Store B. Store C o ers 3 pairs of jeans at $99. Which store o ers the best deal?

The annual interest rate of Erika's savings account is 6.4%, and simple interest is calculated quarterly. What is the periodic interest rate of Erika's account?

how do you solve this (-22) / 5

Ms. Corley wants to take her class on a trip to either the nature center or the zoo. The nature center charges $4 per student plus $95 for a 1-hour naturalist program. The zoo charges $9 per student plus $75 for a 1-hour guided tour.

The amount of money left on a loan that Kira owes her grandmothers is represented by the function k (t) = 280 (.88) ^t where k (t) represents the amount of money left on a the loan and t represents the time, in years.

What is the solution to the equation 1.2m - 3.6 = - 0.6m? m=0.25 m=0.5 m=2 m=3

What measurement is not equal to 6. 5 meters? 0.0065 kilometer 6.50 meters 65 centimeters 6,500millimeters

The least common multiple of 9 and 3 is 9

D-21.4=87.9 Explain your answer