An exterminator estimates that the house has approximately 64,000 ants. After treating the house with repellent the ant population decreases at a rate of 8% per hour. Which equation represents the situation where Y is the number of ants remaining after X hours. A. Y=64000 (0.2)X
B. Y=6400 (0.8)X
C. Y=6400 (0.92)X
D. Y= 6400 (1.08)X

Question: what is the value of x 4x-2= (-7) +5x. it would be greatly appreciated if someone could actually explain to me step by step

The average human heart beats 1.15 \cdot 10^51.15⋅10 5 1, point, 15, dot, 10, start superscript, 5, end superscript times per day. there are 3.65 \cdot 10^23.65⋅10 2 3, point, 65, dot, 10, start superscript, 2, end superscript days in one year. how many times does the heart beat in one year? write your answer in scientific notation, and round to one decimal place.

To solve the system of equations below, pedro isolated the variable y in the first equation and then substituted it into the second equation. what was the resulting equation? { 5y=10x {x^2+y^2=36