The initial population of bacteria in a lab test is 400. the number of bacteria doubles every 30 minutes. predict the bacteria population at the end of three hours

the answer is b i just did that

step-by-step explanation:

answer: 0+0=0

step-by-step explanation:

that is the only answer that can make 0

2. angles qrt and qst both measures 156 degrees.

step-by-step explanation:  

we have been given a diagram of a circle and we are told that measure of arc qvt is 156 degrees.  

we can see from our given diagram that angle qrt and angle qst subtends to arc qvt.

since we know that angles subtended by the same arc at the circumference are always equal.

by angle subtended by same arc theorem, measure of angle qrt and angle qst will be equal to the measure of arc qvt.

therefore, angles qrt and qst both measures 156 degrees and 2nd statement is the correct choice.