Write a general formula to describe the variation.A varies directly with t2; A = 320 when t = 8
A. A = 5t2
B. A = 
C. A = 40t2
D. A = 
Answer: A
Mathematics
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Determine whether 
lie on a straight line.
?
A. no B. yes
Mathematics
Use the given conditions to write an equation for the line in the indicated form.Passing through (4, -4) and parallel to the line whose equation is y = -5x + 8;slope-intercept form
A. y = - 
x - 
B. y = - 5x + 16
C. y = 5x - 16
D. y = - 5x - 16
Mathematics
Solve the equation.
= 
- 
A. {18} B. no solution C. {9, 18} D. {9}
Mathematics
Solve using both the addition and multiplication properties of equality.4r + 2 = 30
A. r = 24 B. r = 5 C. r= 28 D. r = 7
Mathematics