The number of girls in a school is 57 less than 2 times the number of boys in the school there are 143 girls in this school how many boys are in the school

-43

Step-by-step explanation:

143 equal number of girls. The boys is unknown so they'll be x and the question says 2 times.So the equation would be 143=57-2x.

143=57-2x

so subtract 57 from both sides (57 and 143).

86=-2x

divide each side by -2

so x= - 43

answer: median

step-by-step explanation:

the median is the middle value when a data set is ordered from least to greatest

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.