Sahib tried four different solutions to the matching problem. Which of his four answers is correct? Simplified Expression
Expression
2 a squared minus 8 a + 7
3 a squared + 5 a minus 1 minus 5 a squared minus 3 a + 8
2 a squared minus 3 a + 7
3 a squared + 4 a + 6 minus a squared minus 7 a + 1
Negative 2 a squared minus 4 a + 7
Negative 7 a squared minus 9 a + 4 + 5 a squared + 5 a + 3
Negative 2 a squared + 2 a + 7
a squared minus 6 a + 2 + a squared minus 2 a + 5

answer: i believe it’s 245.04

step-by-step explanation:

depends on how many days you are talking about

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.

x= cost per bracelet

number of bracelets * x + shipping charge = total cost

so

9x+9=72