Solve the problem.Let x represent the number of pounds of apples sold at $1.6 per pound, and let y represent the total price paid for the apples. Write an equation for this situation.
A. y = 1.6x
B. x = 1.6 + y
C. y = 1.6 + x
D. x = 1.6y
Answer: A
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Evaluate the integral by using multiple substitutions.
dt
A. 
+ C
B. - 
+ C
C. - 
+ C
D. 
+ C
Solve for x using an equivalent exponential expression.Find the area of a rectangle that measures 2 inches by 7 feet. Give the area in square inches and in square feet.
A. 168 sq in.; 
sq ft
B. 216 sq in.; 1
sq ft
C. 1
sq in.; 168 sq ft
D. 168 sq in.; 1
sq ft
Graph the linear function.G(x) = - 
x
A. 
B. 
C. 
D. 
Solve the problem.Use the formula L = 10 ? log 
, where the loudness of a sound in decibels is determined by I, the number of watts per square meter produced by the sound wave, and 
What is the intensity of a noise measured at 93 db?
A. 9.3 × 10-10 watts per square meter B. 1.09 × 1016 watts per square meter C. 2 × 10-3 watts per square meter D. 2 × 10-2 watts per square meter