Who goes to Connections Academy and can help me with Pre Calc?

Can someone answer this question? : )

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup

Right triangle xyz has a right angle at vertex y and a hypotenuse that measures 24 cm. angle zxy measures 70º. what is the length of line segment xy? round to the nearest tenth. 8.2 cm 8.7 cm 22.6 m 25.5 cm