The number of bacteria in a culture is increasing according to the law of exponential growth. after 2 hours, there are 50 bacteria, and after 4 hours, there are 200 bacteria. how many bacteria will there be after 7 hours?

Which of the following are equations Choose 3 answers A. 60/5=4•3 B. 74=2t C. q-6 D. (r-3) •s=s2 E. 9< (3v) (v+1)

in an examination of 140 students, 80 students passed mathematics, 65 passed physics, 75 passed chemistry, 33 passed mathematics and physics while 30 passed mathematics and chemistry only, if 15 students passed all three courses and 91 students

I have 5 digits. My 4s are worth 4 [10,000s] and 4*10. one of my 3s is worth 3,000. The other is worth 1/10 ads much. My other digits is a 2. What number am I?

26 What is the value of x in the solution to the system of equations below? 6x + 3y = 13 3x - y = 4

Solve for y. 156=52-y

Write 450 miles per 18 gallons as a unit rate (miles per gallon)

If 15 hats cost $120 and all the hats all cost the same amount, what is the price of each hat?

Questions 6 to 10 are related. based on a random sample of n=15 observations, we have obtained a sample mean of x (bar) = 1050. the goal is to test: h (0) : μ≤1000 and h (a) : μ>1000 assume that x is normally distributed with σ=150.

State the domain and range of the relation. (-2,6), (-1,3), (0,2),1,3), (2,6)

The following list gives the coefficients for the binomial expansion of (x + y) 10. What is the value of B? 1, 10, 45, 120, 210, 252, 210, B, 45, 10, 1 A1 B10 C45 D120