Enms. jkins was arranging chairs for school awards assembly. each row contained 15 chairs. if there were 21rows, how many chairs had to be arranged

John makes $10.50 pers hour what expression represens how much he will make if he works h hours

If square root x = -7, then x= -49 true or false

Acompany manufactures three types of cabinets. it makes 110 cabinets each week. in the first week, the sum of the number of type-1 cabinets and twice the number of type-2 cabinets produced was 10 more than the number of type-3 cabinets produced. the next week, the number of type-1 cabinets produced was three times more than in the first week, no type-2 cabinets were produced, and the number of type-3 cabinets produced was the same as in the previous week.