Question

HELPP!! :(
The distance (in miles) traveled by a cyclist is given by d(t) = 5t, where t is the time in seconds. The domain of the function includes

a- all real numbers that are perfect squares
b- all positive real numbers and zero
c- all real numbers other than 5
d- all real numbers

Answer 1

the domain of a function is seconds.

Can you have negative seconds (such as -1 seconds) ?

Answer 2

negative seconds ? no, i believe not @SolomonZelman

Answer 3

yes, exactly, so based on this, what answer choice can you exclude ?

Answer 4

so probably is alll positive real numbers and zero ?

Answer 5

yes.

Answer 6

And a is also obviously not the answer.
For your seconds to be perfect squares, you would have
1 second, 4 seconds, 9 seconds, 16 seconds....

but you are missing
2 seconds, 3 seconds, 5 seconds, 6 seconds, 7 seconds, 8 seconds, and many other numbers...

Answer 7

you are right...i though at first it was just All Real Numbers but since we talking about second that must include the 0 so ;) yeah...anyways Thank u so much

Answer 8

yes, so it is all real numbers that are greater than or equal to 0.

Answer 9

(i.e. option B )