Zane took three typing tests and recorded the results as shown. Test
Number of
Words
Time
(minutes)
А
30
B
78
1 13
21
99
What was Zane's unit rate, in words per minute, on each test?
On which test does Zane have the highest unit rate?

first, we define the variables:

x: number of years after 1950

f (x): amount of vinyl sold.

then, with the variables defined, we have:

68594 vinyl records were sold in 1958 > f (8) = 68594

91299 vinyl records were sold in 1961 > f (11) = 91299

38720 vinyl records were sold in 1952 > f (2) = 38720

161743 vinyl records were sold in 1967 > f (17) = 161743

read more on -

step-by-step explanation:

.

step-by-step explanation:

.