WILL MARK BRAINLIEST.
See attachment.

Humberto multiplied 4 by 3, but that is incorrect, you are supposed to first do 3^2 and the multiply the answer by 4 to get 36.

The correct value is:  36

Step-by-step explanation:

Step 1:  Set t to 3

4t^2

4(3)^2

4(9) -> Correct way

36 -> Correct

Humberto

4(3)^2

(12)^2 -> Made mistake

144 -> Incorrect

Humberto multiplied 4 by 3, but that is incorrect, you are supposed to first do 3^2 and the multiply the answer by 4 to get 36.

The correct value is:  36

rick has $1400 and sally has $1500

step-by-step explanation:

to find amount of money rick has after 10 years :

principal = $1000 , time = 10 years , rate = 4% annually

to find amount of money sally has after 10 years :

her friend gives to pay her $50 per year, therefore money she has after 10 years = 50 × 10 = $500

also, sally gets $1000 after 10 years,

therefore, total amount of money sally has after 10 years = 500 + 1000 = $1500

so, after 10 years : rick has $1400 and sally has $1500

solution:

the given function is ,

      =

the three roots of this quadratic function is , 0 ,8 and 10.all the roots are real and rational.

if a quadratic equation is of the form ,

sum of the roots = a + b +c= 0+8+10=18=  

product of roots taken two at a time = a b + b c+ c a = 0+80+0=80 =  

product of roots = a b c = 0=  

there are 11 doors in a hall starting from 0 to 11.the entry in the hall is permitted through gate number 0 and exit is allowed through only gate number 8 and 10.so, three roots(0,8,10) of quadratic function is given by entry and exit route of this hall.