Unit Test — Unit test Answers

Using Cramer’s Rule, what is the value of y in the solution to the system of linear equations below?

Elise, Maggie, and Francesca work for an insurance company making follow-up calls to clients. Each person works at a different rate. The table below shows the number of hours each person works over three days and the total number of calls that are made. Hours Worked and Total Calls Made EliseMaggieFrancescaTotal CallsMonday778247Tuesday659218Wednesday931156Elise makes the same number of calls every hour, Maggie makes the same number of calls every hour, and Francesca makes the same number of calls every hour. If Elise earns $1.50 per phone call, how much money does Elise make over the 3 days?

Triangle ABC is shown below. Which point is the coordinate of the image of A under the transformation ?

Using Cramer’s Rule, what is the value of x in the solution to the system of linear equations below?

A test is worth 100 points. The test is made up of 40 items. Each item is worth either 2 points or 3 points. Which matrix equation and solution represent the situation?

A company sells herb blends for cooking. The tables below show the number of teaspoons of each herb in each blend and the cost for each blend. Number of Teaspoons of Herb per Blend BasilOreganoParsleyBlend 1123Blend 2112Blend 3221 CostBlend 1$1.06Blend 2$0.72Blend 3$0.99What is the cost of basil per teaspoon?

Using Cramer’s Rule, what is the minimum number of determinants that are needed to solve for all unknowns in the system of linear equations below?

Which operation can be used with the augmented matrix below?