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use the properties and mental math to solve. write you answer in simplest form.

1. (2 5/8+ 5/6) + 1 1/8

2. 5/12 + (5/12+3/4)

3. (3 1/4+ 2 5/6) + 1 3/4

100 points, hi, i’m not sure what to do here,the data doesn’t seem to be quadratic .? can anyone me, in advance

Abarbecue sold 26 hamburgers and hot dogs. hamburgers sell for $3.50 each and hot dogs sell for $2.00 each. if the barbecue made $70 in sales, determine and state the number of hot dogs sold.

Liz had 140 pens and inna had 100 pens. after inna gave liz some pens, liz had 3 times as many pens as inna. how many pens did inna give liz?