Evaluate the algebraic expression for the given values of the variables.x2 - 3y for x = 8 and y = 2
A. 10
B. 58
C. 22
D. 70
Answer: B
Mathematics
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The figure shows the graph of a function. At the given value of x, does the function appear to be differentiable, continuous but not differentiable, or neither continuous nor differentiable?x = -1
A. Differentiable B. Continuous but not differentiable C. Neither continuous nor differentiable
Mathematics
Simplify the expression by using a sum or difference identity.cos (-35°) cos 55° + sin (-35°) sin 55°
A. 
B. 0
C. -1
D. 1
Mathematics
Solve.2x2 + 9x = -2 + 15x
A. 
, 
B. 3 + 
, 3 - 
C. -3 + 
, -3 - 
D. 
, 
Mathematics
Solve.The speed limit is 60 kilometers per hour. Convert this to miles per hour. Round answer to the nearest hundredth, if necessary.
A. 152.4 mi per hr B. 18 mi per hr C. 96.6 mi per hr D. 37.2 mi per hr
Mathematics