If a problem asks you to “Find a formula . . . “ you might begin by
(a) drawing a sketch of the problem situation.
(b) understanding the terms used in the problem.
(c) looking for relationships between known quantities and the unknown quantity.
(d) making a tables of values, using n as the unknown quantity.
(e) trying any one of the above.
(d) making a tables of values, using n as the unknown quantity.
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Solve.Best Rentals charges a daily fee plus a mileage fee for renting its cars. Barney was charged $135 for 3 days and 300 miles, while Mary was charged $241 for 5 days and 600 miles. What does Best Rental charge per day and per mile?
A. $16 per day, 29¢ per mile B. $28 per day, 17¢ per mile C. $30 per day, 17¢ per mile D. $29 per day, 16¢ per mile
Evaluate the root, if possible.- 
A. Not real
B. - 22
C. - 
D. 
Find the product.[ -1 -3 -5] 
A. 
B. [-49 -42 64]
C. 
D. 
Use the echelon method to solve the system of two equations in two unknowns.-7x + 5y = 14 3x + 3y = -6
A. (-2, 1) B. (-3, 1) C. (-2, 0) D. No solution