Unit Test — Unit test Answers

Which ordered pair (c, d) is the solution to the given system of linear equations?

The first three terms of a geometric sequence are shown below.What is the eighth term of the sequence?

Which of the following can be used to evaluate the series ?

What is the summation notation for the geometric series 5 + 10 + 20 + 40 + 80?

What is one of the solutions to the following system?

Which statement correctly explains how Andre could find the solution to the following system of linear equations using elimination?

Which statement describes the system of equations?

Which system is equivalent to ?

A charity bingo game costs $2 per round and has a $13 entry fee for an adult. It costs $3 per round and a $10 entry fee for a child. For how many rounds of bingo are the costs the same for an adult and a child?

What is the solution to the system of equations?

A teacher gave his students the four graphs below. Which graph represents a geometric sequence?Graph AGraph BGraph CGraph D

What is the sum of the first seven terms of the geometric series?3 + 12 + 48 + 192 + ...

A painter is painting a wall with an area of 150 ft2. He decides to paint half of the wall and then take a break. After his break, he paints half of the remaining unpainted portion and then takes another break. If he continues to paint half of the remaining unpainted portion between breaks, approximately what portion of the original wall will be painted when he takes his fifth break?

Which region represents the solution to the given system of inequalities?

A karate studio charges $35 for the first course and $22.50 for each course after that, even if the student leaves the course early. Cena paid $170 for her son to take courses. How many courses did he take?

Which of the following is an arithmetic sequence?

The relationship between women’s whole-number shoe sizes and foot lengths is an arithmetic sequence, where an is the foot length in inches that corresponds to a shoe size of n. A women’s size 7 fits a foot inches long, and a women’s size 12 fits a foot 11 inches long. What is the explicit formula for the arithmetic sequence? Round to the nearest hundredth, if necessary.

Which ordered pair (a, b) is the solution to the following system of equations?

A hospital sends an invoice to a patient. The patient schedules a payment plan in which she makes an initial payment of $1,451 the first month and then pays one-third of the previous month’s payment each of the following months until the invoice is paid in full. Approximately how much of the invoice will be paid after the fourth month?

What are the first three terms of a geometric sequence in which and the common ratio is 5?