Help please ! If someone who is 5ft tall uses a catapult to shoot a potato in the air at 100ft per second, we can use the function below to calculate how high up the potato will be from the ground at any time (x representing the seconds).

f(x) = -16x2 + 100x + 5

1. Explain what f(1) means in this context

2. Find the value of f(1)

3. What does f(x)=0 mean in this context

4. What maximum height will the potato reach?

5. What time will the potato be at its maximum height?

b

step-by-step explanation:

the solution of the equation is 2.23 ⇒ answer b

step-by-step explanation:

* lets revise the meaning of exponential function

- the form of the exponential function is y = ab^x, where a ≠ 0, b > 0 ,  

  b ≠ 1, and x is any real number

- it has a constant base b

- it has a variable exponent x

- to solve an exponential equation, take the log or ln of both sides,  

  and solve for the variable

* lets solve the problem

∵

- the base is 7 and the exponent is x

- insert ㏑ in both sides

∴

- use the rule

∴ x ㏑(7) = ㏑(77)

- to find x divide both sides by ㏑(7)

∴

* the solution of the equation is 2.23 to the nearest 2 decimal places

can someone me: the midsegment through the legs of an isosceles triangle is 4 in. find the sides of the triangle if its perimeter is 20 in. ,   and point g is the centroid of the right △abc with hypotenuse ab=18 in. find cg.