Suppose the linear regression line y=-0.3x + 11.2 predicts the time, in
minutes, it takes you to finish an obstacle course after training for x days.
About how much time would it take you to finish the course after training for
7 days?
O
A. 78.1 minutes
O
B. 2.1 minutes
O
C. 13.3 minutes
O
D. 9.1 minutes

D. 9.1

Step-by-step explanation:

You first multiply -0.3 *(7) which will give you -2.1. Lastly you add 11.2 to the -2.1 that will give you the answer 9.1

a complex number is a number that can be expressed in the form a + bi, where a and b are real numbers, and i is a solution of the equation x2 = −1. because no real number satisfies this equation, i is called an imaginary number. has no real solution, since the square of a real number cannot be negative.

-13

step-by-step explanation:

f(x)=2x-5 for f(-4)

f(-4)   means let x=-4

f(-4) = 2(-4) -5

f(-4) =-8-5

      = -13