State sales tax is based on retail price. An item that sells for $180.99 has a sales tax of $17.4. Find a mathematical model that gives the amount of sales tax y in terms of the retail price x. Use the model to find the sales tax on a $589.99 purchase. (Round your answer to four decimal places.)
?
A. 
B. 
C. 
D. 
E. 
Answer: B
Mathematics
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Use the distributive property to rewrite the algebraic expression without parentheses. Then simplify the result, if possible.-4.7(6.9x - 2.6y - 1.9)
A. -32.43x + 12.22y - 1.9 B. -32.43x - 2.6y - 1.9 C. -32.43x - 12.22y - 8.93 D. -32.43x + 12.22y + 8.93
Mathematics
Solve the equation by the square root property.(7x + 5)2 = 14
A. 
B. {-5 ± 
}
C. 
D. 
Mathematics
Find the value. Give an approximation to four decimal places.ln (6.9 × e-6)
A. -4.0685 B. 1.9315 C. 1.9319 D. 7.9315
Mathematics
Determine whether the given value is a solution to the given equation.
= 0.98; x = 0.09212
A. Yes B. No
Mathematics