Find any x-intercepts.f(x) = x2 + 4x - 7
A. -2 + 
and -2 - 
B. 4
C. -4 and 3
D. none
Answer: A
Mathematics
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Provide an appropriate response.Solve the following equation: 
= 
Fill in the blank(s) with the appropriate word(s).
Mathematics
Use the given information to find the exact value of the trigonometric expression.cos ? = - 
; 
< ? < ?
Find tan(2?).
A. 
B. 
C. 
D. 
Mathematics
Simplify the expression using the imaginary unit i.- 
A. -9i
B. 9
C. 9i
D. -9
Mathematics
Solve the problem.Walt made an extra $5000 by working a second job. He invested part of this money at 7% and the rest at 10%. If his annual return totaled $470, how much must he have invested at 10%?
A. $3000 B. $2500 C. $4000 D. $1000
Mathematics