In january, the left coast bookstore chain sold 700 hardcover books, 1,400 softcover books, and 2,200 plastic books in san francisco; it sold 600 hardcover, 500 softcover, and 500 plastic books in los angeles. now, hardcover books sell for $30 each, softcover books sell for $10 each, and plastic books sell for $15 each. suppose that each hardcover book costs the stores $10, each softcover book costs $5, and each plastic book costs $10. use matrix operations to compute the total profit at each store in january. hint [see example 5.]

san francisco $
los angeles $

b

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.

c. 27 units.

step-by-step explanation:

we are told that in circle a, ∠bae ≅ ∠dae.

we can see from our given diagram that in and ;

, as these are radii of our given circle.

therefore, by sas congruence postulate.

hence, side be will be equal to side de as corresponding parts of congruent triangles are congruent. so we can set an equation to find the value of x as:

now let us substitute x=17 in the expression for the length of be.

therefore, length of be will be 27 units and option c is the correct choice.

nope.   happens to me as well.

-aparri