Solve.Jack's checking account was overdrawn by $68. He deposited $45 into his account. What is his new balance?
A. $113
B. $23
C. -$113
D. -$23
Answer: D
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For the smooth curve r(t), find the parametric equations for the line that is tangent to r at the given parameter value 
r(t) = (9 sin t)i - (6 cos 5t)j +e-9tk ; to = 0
A. x = 9, y = -6t, z = -9 + t B. x = 9t, y = -6, z = 1 - 9t C. x = 9t, y = -6, z = 1 - t D. x = 9t, y = 6, z = 1 + t
Solve the equation.
f - 4 = 1
A. 21 B. -21 C. 35 D. -35
Convert to a logarithmic equation.
2 = 
A. log10/32 = 
B. 
= 
C. log2
= 
D. log10/3
= 2
Tell whether a linear model or a quadratic model is appropriate for the data. If a quadratic model is appropriate, then decide also whether the lead coefficient should be positive or negative.
A. Quadratic; leading coefficient positive B. Quadratic; leading coefficient negative C. Linear