Solve.9r + 7 = 97
A. r = 3
B. r = 81
C. r = 10
D. r = 85
Answer: C
Mathematics
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Find the number of subsets of the set.{mom, dad, son, daughter}
A. 12 B. 8 C. 14 D. 16
Mathematics
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
Mathematics
Factor the square of the binomial.x2 + 40x + 400
A. (x + 40)(x - 40) B. (x + 20)(x - 20) C. (x - 20)2 D. (x + 20)2
Mathematics
Factor the polynomial.x2 - x - 35
A. (x + 5)(x - 7) B. (x - 5)(x + 7) C. (x - 35)(x + 1) D. prime
Mathematics