If a loaf of bread was priced $1.50 on one day and $1.20 the next, what is the percent decrease of the price of the loaf of bread?

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

What is the lcm of 16 and 40 ? 24 and 40 ?

Acaterer charges $500 plus $30 per guest to cater a wedding. walt and traci don't want to spend more than $8000 on catering. write and solve an inequality in terms of the number of guests, g, that can be invited. a) 30g ? 8000; g ? 267 b) 500g < 8000; g < 16 c) 500 + 30g < 8000; g < 250 d) 500 + 30g ? 8000; g ? 250