Write an equation to describe the situation.Each week you save 
, which is 
of your weekly income. Write an equation to describe your weekly income I.
A. 
= 78
B. 
= 
C. I + 
= 78
D. 2I = 78
Answer: A
Mathematics
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Find a formula for the nth partial sum of the series and use it to find the series' sum if the series converges.8 - 
+ 
- 
+ ... + (-1)n-1 
+ ...
A. 
; 
B. 
; 
C. 
; 9
D. 
; 9
Mathematics
Simplify the expression. Assume all variables represent nonnegative real numbers.(x2/3)4/7
A. x8/21 B. x21/8 C. x8/7 D. x26/21
Mathematics
State the phrase as a mathematical expression. Use x to represent the variable.Four times a number, added to 47
A. 4(x + 47) B. 4 ? 47 + x C. 4x D. 4x + 47
Mathematics
Graph the equation.y2 = -12x
A. 
B. 
C. 
D. 
Mathematics