Use the definition of a logarithm to find an equivalent equation.y = log8x
A. y = 8x
B. 8 = xy
C. x = y8
D. x = 8y
Answer: D
Mathematics
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Solve the problem.If s varies directly as t2, and s = 72 when t = 3, find s when t is 4.
A. s = 96 B. s = 128 C. s = 24 D. s = 12
Mathematics
The formula to calculate the basal metabolic rate (BMR) for women is 655 + (4.35 × weight in lb) + (4.7 × height in inches) - (4.7 × age in years). Calculate the BMR for a 55 year old woman who weighs 175 lb and is 5 ft 8 in tall.
A. 822.35 B. 1477.35 C. 1430.35 D. 1538.6
Mathematics
Find the y-intercept.y = 9
A. 1
B. - 
C. 9
D. 0
Mathematics
Solve the problem.An electrician charges a fee of $45 plus $30 per hour. Let y be the cost in dollars of using the electrician for x hours. Find the slope-intercept form of the equation.
A. y = 45x + 30 B. y = 30x - 45 C. y = 45x - 30 D. y = 30x + 45
Mathematics