Solve the problem.In a certain coastal basin, the sea water contains 3.4 grams of salt per 1000 milliliters of water. How many grams of salt would be in 4 liters of the sea water?
A. 0.136 grams
B. 1360 grams
C. 13.6 grams
D. 136 grams
Answer: C
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Write a chain rule formula for the following derivative.
for w = f(x, y, z); x = g(r, s, t), y = h(r, s, t), z = k(r, s, t)
A. 
= 
+ 
+ 
B. 
= 
+ 
C. 
= 
+ 
+ 
D. 
= 
+ 
+ 
Solve the application.The sum of twice a number and 19 less than the number is the same as the difference between -27 and the number. Find the number.
A. -1 B. -2 C. -4 D. -3
Find the approximate equation of the line that passes through the two points. Write the equation in slope-intercept form. Round the slope and the constant term to two decimal places.(3.2, 3.5) and (2.5, 4.4)
A. y = -0.78x + 5.52 B. y = 1.09x + 1.76 C. y = 1.29x + -0.61 D. y = -1.29x + 7.61
Solve the problem.Assume that the sales of a certain appliance dealer are approximated by a linear function. Suppose that sales were $6500 in 1982 and $87,500 in 1987. Let 
represent 1982. Find the equation giving yearly sales 
.
A. S(x) = 16,200x + 6500 B. S(x) = 81,000x + 6500 C. S(x) = 81,000x + 87,500 D. S(x) = 16,200x + 87,500