Find an equation of variation for the given situation.y varies directly as the square of x, and y = 22.05 when x = 7.
A. y = 0.49
B. y = 0.5x2
C. y = 0.45x2
D. y = 2.02x2
Answer: C
Mathematics
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Solve the problem.Twenty families recently purchased new vehicles. 6 of the vehicles were white, 4 of the vehicles were minivans, and 2 of the vehicles were white minivans. What is the probability that a randomly chosen family purchased a white vehicle?
A. 
B. 
C. 
D. 
Mathematics
Solve the linear inequality. Express the solution using set-builder notation and interval notation. Graph the solution set.
x > 
(2x - 3)
A. 
; 
B. 
; 
C. 
; 
D. 
; 
Mathematics
Multiply by powers of 10.20.307 × 10
A. 20.3070 B. 2030.7 C. 203.07 D. 2.0307
Mathematics
Simplify the expression.-6(4r2 + 4) + 7(5r + 9)
A. -48r B. -24r2 + 35r + 39 C. 35r + 4 D. 11r - 2
Mathematics