Total budget of Tamara per month regarding cell phone bill = $29.50
Monthly fee for the plan Tamara uses = $19.00
Per minutes charge for Tamara in the plan = $0.07
Let us assume the number of minutes Tamara can use within her budget = x
Then the equation will be
19 + 0.07x = 29.50
This equation will let Tamara stay within her budget regarding the phone bill. Noe let us solve the equation and find out the number of minutes Tamara can call per month.
0.07x = 29.50 - 19
0.07x = 10.5
x = 10.5/0.07
= 150 minutes.
So each month Tamara can call for 150 minutes and still remain within her allotted budget.