Simplify the expression. Express the answer so that only positive exponents occur. Assume that all variables are positive.(25x6y4)1/2
A. 5x3y2
B. x3y2
C. 5x6y2
D. 5x3y
Answer: A
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Express the statement as a formula.
s is inversely proportional to the square root of t Use the information that if s = 7 then t = 25 to find the constant of proportionality. (a) 7 (b) 38 (d) 175 (e) 1
Write the function in the form y = f(u) and u = g(x). Then find dy/dx as a function of x.y = (2x + 10)3
A. y = u3; u = 2x + 10; 
= 6(2x + 10)2
B. y = 3u + 10; u = x3; 
= 6x2
C. y = u3; u = 2x + 10; 
= 3(2x + 10)2
D. y = u3; u = 2x + 10; 
= 2(2x + 10)3
Simplify by using the order of operations. Round your answer to the nearest hundredth.
A. -41 B. -25.113 C. 4.1 D. 0.41
Find the amount of sales tax or excise tax. Round to the nearest cent.Sales price: $125.52Sales tax rate: 8%
A. $11.30 B. $100.40 C. $8.79 D. $10.04