Problem 1
Jahmal has p pairs of shoes.: p
Kyle has one less than five times as many pairs of shoes as Jahmal.: 5p - 1
Total: p + 5p - 1 = 6p - 1
Answer: 6p - 1
Problem 2
The problem gives the original price as g. there is no s mentioned in the problem, so I don't see how you can express the higher price in terms of s. Of course, it could be that the original price is s, not g, so then just replace g with s in my answer.
The new price is g plus 15% of g.
g + 15% of g =
= g + 0.15g
= 1.15g
Answer: 1.15g
Problem 3
One package of markers costs m. 7 packages of markers cost 7m. Now you need to add 9% of 7m to 7m. If you consider 7m to be 100%, if you add 9% to 100%, you get 109%, so you need to express 109% of 7m. To find a percent of a number, multiply the percent by the number. To find 109% of 7m, multiply 109% by 7m.
109% * 7m = 1.09 * 7m = 7.63m
Answer: 7.63m
Problem 4
She earns $2.15 per hour and works 10 hours.
$2.15/hour * 10 hours = $21.50
From her salary, she earns $21.50 for the 10-hour shift.
Her customer receipts totaled r, and she earns 20% of r in addition to her salary. 20% of r = 0.2r. She earns $21.50 + 0.2r
Answer: $21.50 + 0.2r
