Solve.Mahmoud had a credit balance of $126.95 on his debit card. He went to a department store and returned a set of napkins for a credit of $14.06, then charged a pair of shoes for $53.03 and a pair of sunglasses for $14.15, sales tax included. After the return and two purchases, what was the balance on his card?
A. - $73.83
B. $102.13
C. $208.19
D. $73.83
Answer: D
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Express the number in decimal notation.4.14 × 10-4
A. 0.0000414 B. -414,000 C. 0.000414 D. 0.00414
Use the given values of the variables to find the value of the expression.
for x = -10, y = 4
A. 
B. 
C. 
D. - 
The spread of a contaminant is increasing in a circular pattern on the surface of a lake. The radius of the contaminant can be modeled by 
, where r is the radius in meters and t is the time in hours since contamination.
?
Find a function that gives the area A of the circular lake in terms of the time since the spread began.
?
A. 
B. 
C. 
D. 
E. 
Write the function in the form y = f(u) and u = g(x). Then find dy/dx as a function of x.y = 
8
A. y = u8; u = 4x2 - 
- x; 
= 8
7
B. y = u8; u = 4x2 - 
- x; 
= 8
7
C. y = u8; u = 4x2 - 
- x; 
= 8
7
D. y = 4u2 - 
- u; u = x8; 
= 8x16 - 
- x8