The formula h = 120t - 16t gives the height h in feet of an object t seconds after it is shot upward from Earth’s surface with an initial velocity of 120 ft per second. What will be the height of the object after 6 seconds?

C

Step-by-step explanation:

So we have the function:

Where h(t) measures the height after t seconds.

To find the height of the object after 6 seconds, substitute 6 for t. So:

Evaluate. Square:

Multiply:

Subtract:

So, the height after six seconds of the object is 144 ft.

Our answer is C.

the expression (1.26)2t reveals the approximate rate of increases in the number of plants semiannually.

hope this : )

5x + 3y = - 4

step-by-step explanation:

the equation of a line in standard form is

ax + by = c ( a is a positive integer and b, c are integers )

express the line first of all in slope- intercept form

y = mx + c ( m is the slope and c the y-intercept )

to calculate m use the gradient formula

m = ( y₂ - y₁ ) / ( x₂ - x₁ )

with (x₁, y₁ ) = (7, - 3) and (x₂, y₂ ) = (4, - 8)

m = = -

y = - x + c ← is the partial equation

to find c substitute either of the 2 points into the partial equation

using (4, - 8 ), then

- 8 = - + c ⇒ c = -

y = - x - ← in slope-intercept form

multiply all terms by 3 to eliminate the fractions

3y = - 5x - 4 ( add 5x to both sides )

5x + 3y = - 4 ← in standard form