Answer:
289/216
Step-by-step explanation:
add the parentheses first
(2/3+3/4)×(3/6+4/9)=
17/12×17/18
then multiply
17/12×17/18=
286/216
Its C. because it doesnt pass the vertical line test. if u draw a line through it it touches 2 lines but it should touch only one so its C.
a) Remember that the y-intercept of a exponential function

is

, so the only thing to do to find the y-intercept in our functions is evaluate it at t=0:




We can conclude that the y-intercept of our function is (0,50), and it represents the initial bacteria population in the sample.
b) To find if the function is growing or decaying, we are going to convert its decimal part to a fraction. Then, we will compare the numerator and the denominator of the fraction. If the numerator is grater than the denominator, the function is growing; if the opposite is true, the function is decaying.
Remember that to convert a decimal into a fraction we are going to add the denominator 1 to our decimal and then we'll multiply both of them by a power of ten for each number after the decimal point:

Now we can rewrite our exponential function:

Since the numerator is grater than the denominator, it is growing faster than the denominator; therefore the function is growing.
c) The only thing we need to do here is evaluate the function at t=5:




We can conclude that after 5 hours <span>Dr. Silas began her study will be 268.9 bacteria in the sample.</span>
let's start with attempting to isolate the variable. remember what you do to one side you have to do to the other. -1
2x=3/4x+8
-3/4x from both sides
5/4x = 8
multiply both sides by 4
5x =32
divide both sides by 5
x=6.4 or 6 2/5. sorry if this is wrong