Question

can you show me the format to get the answer to m/3 +4=7

Answer 1

can you show me the format to get the answer to m/3 +4=7​

we have

$\frac{m}{3}+4=7$

solve for m

that means

isolate the variable m

so

step 1

subtract 4 both sides

$\begin{gathered} \frac{m}{3}=7-4 \\ \frac{m}{3}=3 \end{gathered}$

step 2

multiply by 3 both sides

$\begin{gathered} m=3\cdot3 \\ m=9 \\ \\ \\ \end{gathered}$

therefore

the answer is

m=9

we have that

step 1

is equal to

m/3 +4-4=7-4

step 2

is equal to

m/3=3

step 3

is given

step 4

is given

Part 2

Let

n------> number of hours

y -----> the total charge

Remember that

The linear equation in slope intercept form is equal to

y=mx+b

where

m is the slope or unit rate

b is the y-intercept or initial value

In this problem

y=mn+b

where

m=$25 per hour

b=$50

so

y=25n+50

For y=$125

Find out the number of hours

substitute the value of y in the equation and solve for n

125=25n+50

25n=125-50

25n=75

n=3 hours

therefore

the answers are

the total charge's equation is (25n+50)

the number of hours are 3