Jace went shopping for a new phone. The listed price of the phone was $50, but the price with tax came to $51.50. Find the percent sales tax.

Find the midpoint m of z1=(8+5i) and z2=(12+3i)

Julie buys 2kg of apples and 7kg of pears ? 12.70. the pears cost ? 1.30 per kilogram what is the price per kilogram of the apples? show your working out

Thanh and her crew are building a stage in the shape of a trapezoid for an upcoming festival. the lengths of the parallel sides of the trapezoid are 14 ft and 24 ft. the height of the trapezoid is 12 ft.what is the area of the stage? enter your answer in the box. ft²