Amy plans to buy a pair of shoes for $78.99 and 2 shirts for $21.98 each. If the sales tax rate is 6%, what is reasonable for her total purchase amount?

Asmall business produces and sells balls. the fixed costs are $20 and each ball costs $4.32 to produce. each ball sells for $8.32. write the equations for the total cost, c, and the revenue, r, then use the graphing method to determine how many balls must be sold to break even.

The sum of the squares of two numbers is 8 . the product of the two numbers is 4. find the numbers.

Aschool had an election where the candidates received votes in the ratio 1: 2: 3. if the winning candidate received 210 votes, how many total people voted in the election?