Solve the problem.Use determinants to find the area of the triangle with vertices (-5, -3), (5, 0), and (-1, 5).
A. 35.5
B. 34.0
C. 34.5
D. 35.0
Answer: B
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Solve.x2 + y2 = 100x2 - y2 = 100
A. (10, 0), (10, 10) B. (10, 0), (-10, 0) C. (-10, 0), (-10, 10) D. (10, 10), (-10, 10)
Solve the problem.Use the tax rates shown in the table to find the federal income tax owed by a married couple filing jointly with a taxable income of $42,000. 
A. $6300 B. $4200 C. $5430 D. $5070
Tom has a mean score of 86 on the first three tests in class. What is the highest grade Tom can get if there is only one more 100-point test and all the tests are equally weighted. The teacher rounds final grades to the nearest integer.
a. 93 b. 92 c. 87 d. 89 e. 90
Solve the problem.An omelette costs $1.00 more than Mario's order of pancakes. After treating his family to breakfast, Mario is sure that 4 omelettes and 2 orders of pancakes cost more than $25 but not more than $40, including tax of 7% and a tip of $3.50. In what price range is an order of pancakes?
A. ($2.68, $5.02) B. ($2.68, $5.02] C. ($2.64, $4.98] D. [$2.64, $4.98]