Provide an appropriate response.Under what condition will the sum of a positive number and a negative number be positive?
What will be an ideal response?
The absolute value of the positive number must be larger than the absolute value of the negative number.
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Calculate the area of the surface S. S is the portion of the cone 
+ 
= 
that lies between z = 2 and z = 6.
A. 72
?
B. 30
?
C. 30
D. 24
?
Solve the problem.A tank initially contains 100 gal of brine in which 60 lb of salt are dissolved. A brine containing 4 lb/gal of salt runs into the tank at the rate of 8 gal/min. The mixture is kept uniform by stirring and flows out of the tank at the rate of 5 gal/min. Write, in standard form, the differential equation that models the mixing process.
A. 
+ 
y = 32
B. 
+ 
y = 20
C. 
= 32 - 
y
D. 
+ 
y = 32
Use both properties of equality to solve the equation.
- 7 = -3
A. 68 B. -68 C. -70 D. 70
Solve.5(x + 2) + 34 = 7x - 2(x - 8)
A. x = 50 B. Infinite number of solutions C. x = 18 D. No solution