A30-mi. stretch of highway has markers every 0.2 mi. the first marker is at the 0.2 mi. mark and the last marker is at the end of the highway at the 30 mi. mark. if n is the number of markers, which equation is true?
a. 30 • 0.2 = n
b. 30 • 0.5 = n
c. 30 • n = 0.2
d. 30 ÷ 0.2 = n

Kevin has just finished paying off his loan. he was assessed a service charge of $422. he paid off the principal and the interest by making weekly payments of $36.13 for four years. if the principal was $7,150, how much did kevin pay in finance charges, to the nearest dollar? a. $498 b. $365 c. $422 d. $787

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Atoy company is considering a cube or sphere-shaped container for packaging a new product. the height of the cube would equal the diameter of the sphere . compare the volume to surface area ratios of the containers. which packaging will be more efficient? for a sphere, sa =4πr²