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Solve the problem by writing and solving a suitable system of equations.A shopkeeper orders 28 pounds of cashews and peanuts. If the amount of cashews he orders is less than the amount of peanuts, how many pounds of peanuts did he order?

Solve the problem.The profits (in millions of dollars) of a company can be described by the equation where x is the number of years since 2000. Profits were $7.8 million in the year 2000, $9.1 million in 2004, and $12.4 million in 2008. Find the values of a, b, and c and use your answer to estimate profits in the year 2,016. Round to the nearest tenth.

Write an augmented matrix for the system of equations. 7x + 7z = 21 9y + 9z = 27 3x + 3y + 8z = 20

Determine whether the given ordered set of numbers is a solution of the system of equations.(4, -4)x + y = 0x – y = 8

Perform row operations on the augmented matrix as far as necessary to determine whether the system is independent, dependent, or inconsistent. x + y + z = 7 x – y + 2z = 72x + 3z = 14

Multiply both sides of each equation by a common denominator to eliminate the fractions. Then solve the system. – = -18 + = -9

Find the order of the matrix product AB and the product BA, whenever the products exist.A is 2 x 2, B is 2 x 2.

Solve the problem by writing and solving a suitable system of equations.Best Rentals charges a daily fee plus a mileage fee for renting its cars. Barney was charged $141 for and 300 miles, while Mary was charged $252 for and 600 miles. What does Best Rental charge per day and per mile?

Write an augmented matrix for the system of equations. 7x + 7y = 77 4x – 2y = -10

ELEN 2411 Quiz 2 Spring 2026 online.pdf