When a number is multiplied by 4 before subtracting from 68, the result obtained is the same as three times the sum of the number and 4. Find the number.

x = 8

Step-by-step explanation:

68 - 4x = 3x + 12

Now subtract 12 and add 4x to both sides...we get

56 = 7x and

x = 8

answer: .64

step-by-step explanation

set up the formula for standard deviation for this set of numbers, then simplify

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.