Evaluate the expression without using a calculator.
?
What will be an ideal response?
Mathematics
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Evaluate the integral.
A. 
B. 60
C. 20
D. 40
Mathematics
Write the algebraic expression without parentheses.-(7x - 7)
A. -7x - 7 B. -7x + 7 C. 49x D. 7x - 7
Mathematics
Find the slope and the y-intercept from the equation of the line. Sketch a graph of the equation.3x - 4y = 21
A. m = 
; y-intercept = - 
B. m = - 
; y-intercept = - 
C. m = - 
; y-intercept = - 
D. m = 
; y-intercept = - 
Mathematics
Use the formula for the area or circumference of a circle to solve the problem. Where applicable, express answers in terms of ?.
Give the exact circumference.
A. 19.5? units B. 78? units C. 39? units D. 1521? units
Mathematics