Factor completely .
4u^2 - 100

4(u - 5)(u + 5)

Step-by-step explanation:

We have the expression,

Factor out 4:

25 can be written as

Use difference of squares property:

=

.

Step-by-step explanation:

Make use of the fact that the difference of two perfect squares, , could be rewritten as a product of the form . That is:

.

In this question, the two squares are and , respectively. Thus:

.

Simplify this expression even further:

.

idk bring the function back   im not smart

step-by-step explanation:

option c) graph of line going through 1, 4 and 3, 10

step-by-step explanation:

let y equal to margo's coin collection

let x equal to number of years

at the begining x=0, y=1 → point=(x,y)→point=(0,1)

she adds 3 coins per year, then y=1+3x

at x=1, y=1+3(1)=1+3→y=4→point=(x,y)→point=(1,4)

at x=3, y=1+3(3)=1+9→y=10→point=(x,y)→point=(3,10)

the graph of line going through (1, 4) and (3, 10), then the option c is the correct.