I'm not sure if I am right or what to do next.

I have to write and solve equation that tells me the number of minutes for which the cost of both phone companies is equal.

Phone company. Charges
Comp.A. 36cents plus 3 cnts per min.

Comp.B 6cents per minute

I have

A= 0.03m+ 0.36
B= 0.06

B should be B = .06m

so you want them equal.
.06m = .03m + .36

solve for m

Thank you reiny

To find the number of minutes for which the cost of both phone companies is equal, we need to set up an equation where the cost of each company is equal. Let's assume the number of minutes is represented by a variable, 'm'.

The cost for Company A (Comp.A) is given by: 36 cents (fixed charge) + 3 cents per minute. So, the cost equation for Comp.A is: Cost_A = 36 + 3m cents.

The cost for Company B (Comp.B) is given by: 6 cents per minute. So, the cost equation for Comp.B is: Cost_B = 6m cents.

To find the number of minutes for which the costs are equal, we need to solve the equation: Cost_A = Cost_B.

Setting the two cost equations equal to each other:
36 + 3m = 6m.

Now, we can solve this equation to find the value of 'm' (the number of minutes).

First, let's move all the 'm' terms to one side:
36 = 6m - 3m.

Combining like terms:
36 = 3m.

Now, divide both sides of the equation by 3 to isolate 'm':
36/3 = 3m/3.

Simplifying:
12 = m.

Therefore, the number of minutes for which the cost of both phone companies is equal is 12 minutes.