Factor by grouping.x3 + 5x2 + 3x + 15
A. (x - 5)(x3 + 3)
B. (x + 5)(x2 + 3)
C. (x + 5x)(x2 + 3)
D. (x + 5)(x2 - 3)
Answer: B
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Solve the problem. Round your answer, if appropriate.A company has found that its rate of expenditure (in hundreds of dollars) on a certain type of job is given by 
where x is the number of days since the start of the job. Find the total expenditure if the job takes 5 days.
A. $120 B. $4400 C. $12,000 D. $44
Multiply, and then simplify if possible. Assume all variables represent positive real numbers.
2
A. x + 6
+ 5
B. x + 6
+ 13
C. x + 6
+ 49
D. x + 6
+ 9
Evaluate the function at the given value of the independent variable and simplify.f(x) = 
;f(-3)
A. -4 B. 4 C. 2 D. not a real number
Find the slope and the y-intercept of the given line.5x + 7y = 48
A. -1
; 
B. 
; 
C. - 
; 
D. 1
; 