Perform the indicated operation.43 + (-70)
A. 27
B. -27
C. 113
D. -113
Answer: B
Mathematics
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Solve the problem.The function f(x) = 
models the average cost per unit, f(x), for Electrostuff to manufacture x units of Electrogadget IV. How many units must the company produce to have an average cost per unit of $450?
A. 90 units B. 181 units C. 164 units D. 163 units
Mathematics
For the curve r(t), find an equation for the indicated plane at the given value of t.r(t) = (t + 2)i + (ln(cos t) - 6)j + 9k, -?/2 < t < ?.2; rectifying plane at t = 
.
A. 
- 
= 0
B. 
(x - (1 + 2)) = 0
C. 
+ 
= 0
D. - 
+ 
= 0
Mathematics
Simplify the expression.32-4/5
A. 
B. 16
C. - 
D. not a real number
Mathematics
Express the phrase as a ratio in lowest terms.6 yd to 3 ft
A. 
B. 6
C. 
D. 
Mathematics