Which of the following numbers is irrational?
a. 5/9
b. 3.15
c. square root of 5
d. 8.341

Abike shop sells you a bicycle for $63 and a helmet for $21. the total cost is 150% of what the shop spent originally. how much did the shop spend originally? how much profit did the bike shop earn by selling the bicycle and helmet to you ?

Michael split a rope that was 28 inches long into 5 equal parts. brenden split a rope that was 30 inches long into 6 equal parts. which boy's rope was cut into longer pieces?

If f(x) = 5х – 2 and g(x) = 2х + 1, find (f – g)(x).