If now Jenny is twice as old as Leo, and 5 years ago she was three times as old as he was, how old are they now?

Leo is 10, Jenny is 20

Step-by-step explanation:

Let's say that Jenny's current age is j, and that Leo's current age is l. With this, we can set up the following equations:

j=2l

j-5=3(l-5)

Let's use substitution and plug the first equation into the second one:

(2l)-5=3(l-5)

2l-5=3l-15

l=10

j=20

Hope this helps!

the answer is the third / last answer

step-by-step explanation:

g(x) = 3*(8(3^(x−2))+2)

g(x) = 24 (3^(x-2) )+6

the factor is 2

step-by-step explanation:

let f(x)=8(3^(x−2)+2)

to stretch a graph by 3, it would be 3f(x)

g(x) =3f(x)

g(x) = 3*(8(3^(x−2))+2)

g(x) = 24 (3^(x-2) )+6

x     −2     0     2     4     6

f(x) 1/64 1/16   1/4     1     4

1/64 * z * z = 1/16

i multiplies by z twice because it its 2 steps from -2 to 0

1/64 z^2 = 1/16

multiply by 64 to clear the fraction on the left side

1/4 * 64 z^2 =1/16 *64

z^2 = 4

take the square root of each side

sqrt(z^2) = ±sqrt(4)

z = ±2  

we are multiplying by 2 each time.