C because there are 60 seconds in a minute so if you multiply 600 x 60 you get 36000
4" x 2500 ft², namely 4 ft x 2500 ft², will just be 4*2500*ft*ft², or 10000 ft³.

since there are 27 ft³ in 1 yd³, then how many yd³ are there in 10000 ft³?
10000/27, that many yd³.
F(2)=42(2)-100
f(2)= -16
f(2)/-16= -8
The tenth place is the first number to the right of a decimal. To determine if you're rounding or not, check the hundred's place, 2 numbers to the right of a decimal, for 5 or higher. If it's .45, round to .5, if it's .44, round to .4
Your answer is 524.5, which is B.)
A rational number is any number that can be written as a ratio or a fraction.
So 5/9 is a rational number. So basically that eliminates 2, 3, and 4.
And we are left with 1. as our answer choice which is Rational and real.