Example 13 A student has N500. She buys pencils at N50
each and erasers at N20 each. She gets at least
five of each and the money spent on pencils is
over N100 more than that spent on erasers.
Find a how many ways the money can be spent,
b the greatest number of pencils that can be
bought,
c the greatest number of erasers that can be bought.​

Problem situation: caren is making rice and beans. she can spend no more than $10 on ingredients. she buys one bag of rice for $4.99. beans cost $0.74 per pound. how many pounds of beans, x, can she buy? inequality that represents this situation: 10≥4.99+0.74x drag each number to show if it is a solution to both the inequality and the problem situation, to the inequality only, or if it is not a solution.