You has 20$ to spend on 3 pencils. after buying them, you had 11$. how much was each pencil?

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?

Rewrite 9 log, x2 in a form that does not use exponents. 9log, x = log, x

22. catie is starting a babysitting business. she spent $26 to make signs to advertise. she charges an initial fee of $5 and then $3 for each hour of service. write and solve an inequality to find the number of hours she will have to babysit to make a profit. interpret the solution.!