Jeff has 12 laptops. the service charges for each laptop are 26. find the total expenditure

For one history test, keith had to answer 40 questions. of these 40 questions, keith answered 28 of them correctly. what percent did keith get on his history test? round your answer to the nearest tenth if necessary

What is the area of the triangle 10 13 12

Write the expression 7x^3-28xy^2 as the product of 3 factors