Scientists studying a certain species of frog found
that the population is decreasing by 35% each
year. The initial population of frogs was 750. Write
an equation that models the population y of frogs
remaining after x years.
a is the initial population, so a = 750.
b is the decay factor, so b= 35% = 0.35
Substitute for a and bin y = ab.
The equation that models the population y of
frogs remaining after x years is y = 750(0.35).

the correct option is 2.

step-by-step explanation:

according to the given information triangle abc is a right angle triangle with right angle at a. segment ab is 5 and segment ac is 7. point d is on segment bc and angles adb and adc are right angles.

it is given that triangles abd, cad, and cba are similar.

two triangles are similar if their corresponding sides are proportional.

in triangle cba, using pythagoras theorem

                      )

triangle abd and cba are similar,

                            (2)

triangle cad and cba are similar,

                      )

using (1), (2) and (3), we get

hence proved.

therefore option 2 is correct.

step-by-step explanation:

bob the banana

x² + 3x + 7 = 0       [ax² + bx + c]

a = 1

b = 3

c = 7

quadratic formula:

    (+/- is this ±)

plug in the numbers into the variables

your answer is a