Perform the indicated operations in the proper order.-20 ÷ 5 - 3 ÷ 3
A. -4
B. 3
C. -5
D. 4
Answer: C
Mathematics
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Find the formula for the function.Express the area of a circle as a function of its radius r.
A. A = 2?r B. A = ?r3 C. A = ?r2 D. A = ?r
Mathematics
Solve the problem.The ellipse 
+ 
= 1 is shifted down 7 units and right 5 units. Find an equation for the new ellipse and find the new center.
A. 
+ 
= 1; center: (7, -5)
B. 
+ 
= 1; center: (-7, 5)
C. 
+ 
= 1; center: (5, -7)
D. 
+ 
= 1; center: (5, -7)
Mathematics
Express the number in scientific notation.0.0000004
A. 4 × 10-6 B. 4 × 10-8 C. 4 × 10-7 D. 4 × 10-9
Mathematics
Graph the exponential function whose equation is given. Start by using -2, -1, 0, 1, and 2 for x and finding the corresponding values for y.f(x) = 3x
A. 
B. 
C. 
D. 
Mathematics