If the height of a falling object after a certain amount of time is given by the equation h=−16t^2 +500, which of the following is true? A.) t must be greater than or equal to 16.

B.) t must be greater than or equal to 0.

C.) h must be greater than or equal to 500.

D.) h must be less than or equal to 0.

A

Step-by-step explanation:

Hopefully this helps

b

step-by-step explanation:

a difference is the result of subtraction. while each of these expressions has subtraction in it, a difference will be the result when subtraction is the last operation applied in the order of operations for the expression. this means subtraction must be outside of the parenthesis. only b has this.

b. 6

step-by-step explanation:

we are given the table representing an exponential function.

we can see from the table that, as x is increasing, the value of y is increasing in the power of 6.

i.e. the following relation is obtained,

x = 1, y = 6

x = 2, y = 36 =

x = 3, y = 216 =

x = 4, y = 1296 =

x = 5, y = 7776 =

so, the geometric series obtained is .

thus, the common ratio is given by = = 6.

hence, the common ratio is 6.