Answer:
$
Step-by-step explanation:
Hello!
The equation representing the statement is the third one, x=4(x-15). In fact, Juan’s age is x, his age 15 years ago is (x-15) and it is said that his age now is 4 times his age 15 years ago, so x=4(x-15).
If my answer is not clear enough or you’d like further explanation please let me know. Also, English is not my first language, so I’m sorry for any mistakes.
Answer:
c = -24
Step-by-step explanation:
y=16x^2-8x-24
The equation for a parabola can be written as
y = ax^2 +bx +c
For the above equation
a =16
b = -8
c = -24
It's an upside (-) down parabola. The axis of symmetry is the x coordinate of the vertex.
you can easily find this using formula: x= -b/2a
for parabola: ax² + b + c = 0
x = -16 ÷ 2(-4)
x = 2
Answer C