Marquis wrote the linear regression equation y=1.245x - 3.684 to predict the cost, y, of x songs purchased. Marquis spent $40 on

Question

Basile [38]

4 years ago

11

Marquis wrote the linear regression equation y=1.245x - 3.684 to predict the cost, y, of x songs purchased. Marquis spent $40 on

songs. Which is the best estimate of the number of songs that Marquis purchased?

Mathematics

2 answers:

AleksAgata [21] · Answer 1 · 2021-11-07T06:27:40+03:00

AleksAgata [21]4 years ago

6 0

Answer: C. 35

Step-by-step explanation:

y = 1.245x - 3.684

Clearing x:

1.245x = (y + 3.684)

x = (y + 3,684) / (1,245)

Substituting the value of y:

x = ((40) +3,684) / (1,245) = 35.09

x = 35

jasenka [17] · Answer 2 · 2021-11-07T04:37:17+03:00

What you should do for this casp is to use the given expression and clear the value of x.
We have then:
y = 1.245x - 3.684
Clearing x:
1.245x = (y + 3.684)
x = (y + 3,684) / (1,245)
Substituting the value of y:
x = ((40) +3,684) / (1,245) = 35.09
x = 35
answer:
the best estimate of the number of songs that Marquis purchased is 35