Help me pls also brainliest

95

Step-by-step explanation:

First, find the area of the 4 triangles:

a= 1/2 base times height

a=(1/2)(5)(7)

a= 17.5

17.5 times 4 = 70 (4 triangles)

Now find the area of the square:

a=5 times 5

a=25

add: 70+25 = 95

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

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.