Answer:
the third one
Step-by-step explanation:
use quadratic equation
Answer:
Stan initially had $60.
Explanation


( Since 60 is the denominator it is also the total amount).

Simplify within ... remember to subtract exponents when dividing

← simplifying x

← simplifying y

Negative exponents require you to flip the base if you want a positive exponent.
The correct answer is B
Answer:
65
Step by step explanation:
If 15 students drink nothing, the total of students who drink is 110-15=95.
Out of this 95, 70 drink tea and 30 drink coffee. 70+30=100 but there are only 95 students who drink so that must mean that 5 students (100-95=5) drink both. So you have to subtract five from botht the group of tea drinkers and coffee drinkers (65+5+25=95)