Change the word statement to an equation. Use x as the variable.A number minus 2 equals 4.
A. x = 2 - 4
B. 2 - x = 4
C. x - 2 = 4
Answer: C
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Write the word phrase as an algebraic expression. Use x to represent the unknown value.The difference of seventeen and a number, divided by four.
A. 
- 17
B. 
C. 17 - 
D. 
Find all the roots of the function. Use preliminary analysis and graphing to determine good initial approximations. Round to six decimal places.f(x) = ln(4x) - 4x2 + 2x + 1
A. x ? 0.080253, 1.072435 B. x ? 1.580364, 2.572546 C. x ? 0.302364, 1.294546 D. x ? 0.080364, 1.072546
Solve the problem.The cost to rent a power-wash machine from the hardware store depends on the number of hours the machine is rented. It costs $52 to rent the machine for 2 hours, and it costs $156 to rent it for 6 hours.(i) Write a linear equation giving the cost, y, in terms of the number of hours x.(ii) Use the equation found in part a to find how much it costs to rent for 12 hours.(iii) How many hours could you rent for a cost of $624?
A. (i) y = 26x (ii) $312 (iii) 24 hours B. (i) y = 25x (ii) $300 (iii) 23 hours C. (i) y = 28x (ii) $336 (iii) 24 hours D. (i) y = 27x (ii) $324 (iii) 25 hours
Estimate an answer to the problem.An advertisement states that television sets are on sale at B&G Electronics. The sale prices are: 
set, $147.99; 
set, $201.95; 
set, $231.99; 27-inch set, $299.97; 
set, $502.97. Estimate the approximate number of 
style="vertical-align: -4.0px;" /> sets that can be bought for $2729. A. 12 B. 19 C. 9 D. 5