F (x) = 2x² - 10x + 13

Find f (-4)

85

Step-by-step explanation:

In this question, you would solve by plugging in -4 to x.

Solve:

f(-4) = 2(-4)² - 10(-4) + 13

= 2(16) + 40 + 13

= 32 + 40 + 13

= 72 + 13

= 85

f(-4) = 85

1,407.5 hours

step-by-step explanation:

we first convert all the time to hours and then sum them up.

there are 24 hours in 1 day, in 58 days, there are 24 x 58 = 1,392 hours.

there are 60 minutes in 1 hour, thus, 30 minutes will be equivalent to 30 / 60 = 0.5 hours.

therefore, the number of hours it will take mercury to complete a full rotation is 1,392 + 15 + 0.5 = 1,407.5 hours

mrbilldoesmath!

answer: a parabola

steps:

(x-1)(x+4)   = x(x+4) - 1(x+4) = (x^2 + 4x) - (x+4)

                = x^2 +4x -x -4   = x^2 +3x -4

which is a parabola

mrb