Solve.35(x - 140) = 70
A. x = 70
B. x = 140
C. x = 142
D. x = 138
Answer: C
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Solve the problem. Round your answer, if appropriate.Boyle's law states that if the temperature of a gas remains constant, then PV = c, where 
, 
, and c is a constant. Given a quantity of gas at constant temperature, if V is decreasing at a rate of 13 in. 3/sec, at what rate is P increasing when P = 70 lb/in.2 and V = 60 in.3? (Do not round your answer.)
A. 
lb/in.2 per sec
B. 
lb/in.2 per sec
C. 
lb/in.2 per sec
D. 
lb/in.2 per sec
Solve the problem.The grocery expenses for six families were 
, 
, 
, 
, 
, and 
. Compute the mean grocery bill. Round
your answer to the nearest cent. A. $70.13 B. $68.44 C. $102.67 D. $82.13
Solve the problem.Suppose that z varies jointly with x and y and that z = 196 when x = 7 and 
Find the constant of proportionality k. Then, find z when x = 6 and 
A. k = 2; z = 36
B. k = 19,208; z = 
C. k = 0.2; z = 3.6
D. k = 4; z = 72
Find the values of x for which the equation is true.
= 4
A. -4 B. 4 C. 4, -4 D. 16