Marian borrowed money to buy a sound system that costs $450. She is charged 5% simple interest for one year. What is the total amount that she pays for the second system if she pays the full amount in one year?

Given that csc (x) = - 7/4 pi < x < (3pi) / 2 the exact values of sin2x, cos2x, and tan2x

Last year ms. diaz invested $9,000. Some of her money was invested in stocks paying 6% annually and the rest was invested in bonds paying 7.5% annually. She received a total of $600 from these investments for the year.

Eight and 4 fifths minus one half

Divide - 20.40 and - 4

tina has 50 coins, all dimes and quarters. the value of the coins is $7.10. write a system of equations to determine how many dimes and how many quarters tina has

Brady studied 1.5 hours on Monday, 0.75 hours on Tuesday, 1.25 hours on Wednesday, and 1 hour on Thursday. How many total hours did he study this week?

What is the sum of 3a+b+a+b?

A store had a vending machine. Customers put in a quarter, and they receive a handful of candy. The machine is profitable if x > 40, where x is the total amount of money in quarters at the end of one week.

How do you solve life problems?

How many solutions does y=-3/2x+5 and y=-3/2x-3 have