Can anyone help me with this problem?
1/2(2d-3/4)+2/5=4d/5

d = 31/8 or 3 and 7/8

Step-by-step explanation:

1/2(2d - 3/4) + 2/5 = 4d/5

Distribute the 1/2 to the numbers in the parentheses

d - 3/8 + 2/5 = 4d/5

Combin the 3/8 and 2/5 by finding a common denominator

d - 31/40 = 4d/5

Multiply the 5 to cancel it out

5d - 31/8 = 4d

Move the 5d over

-31/8 = -d

Divide by -1 to make the -d positive

d = 31/8 or 3 7/8

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.